Question

Ratio of obtuse triangles to acute triangles in the square.

score 158 · Answer 1 · 2020-12-06 06:02:50

158

Views

Ratio of obtuse triangles to acute triangles in the square.

Published on 06 Dec 2020 - 6:02

score 253 · Answer 2 · 2026-03-25 18:47:10

253

Views

Contradiction between OEIS and factordb.com

Published on 25 Mar 2026 - 18:47

score 3.9k · Answer 3 · 2020-12-25 15:45:02

3.9k

Views

A $2021$ problem: $20\sim 21$ and $43\times 47$

Published on 25 Dec 2020 - 15:45

score 511 · Answer 4 · 2021-01-30 13:53:46

511

Views

How many combinatorially distinct ways are there to tile an equilateral triangle with $k$ $60^\circ-120^\circ$ trapezoids?

Published on 30 Jan 2021 - 13:53

score 643 · Answer 5 · 2026-02-23 04:36:12

643

Views

How many "prime" rectangle tilings are there?

Published on 23 Feb 2026 - 4:36

score 324 · Answer 6 · 2021-02-28 12:12:40

324

Views

Mistake in OEIS A103904?

Published on 28 Feb 2021 - 12:12

score 190 · Answer 7 · 2021-03-17 18:48:24

190

Views

Does the number of permutations in $S_n$ with major index equal to $k$, satisfy a degree $k$ polynomial?

Published on 17 Mar 2021 - 18:48

score 89 · Answer 8 · 2021-03-20 05:28:35

89

Views

What is the sum of the series with terms 1/(2/(3/(4/(5/(6/...?

Published on 20 Mar 2021 - 5:28

score 202 · Answer 9 · 2021-03-20 21:06:56

202

Views

Greatest number of occurrences of the pattern 4213 in a permutation.

Published on 20 Mar 2021 - 21:06

score 78 · Answer 10 · 2021-03-26 04:47:44

78

Views

Packing density of 2143 and crossing number of complete graph

Published on 26 Mar 2021 - 4:47

score 47 · Answer 11 · 2021-03-26 05:52:19

47

Views

Chromatic polynomial of the cross-polytope and denominators of convergents to e.

Published on 26 Mar 2021 - 5:52

score 67 · Answer 12 · 2021-03-29 03:32:31

67

Views

OEIS sequence A308092: run lengths of bits and run lengths of an auxiliary sequence.

Published on 29 Mar 2021 - 3:32

score 119 · Answer 13 · 2021-04-20 01:29:18

119

Views

The Sierpiński triangle and the number of $(0,1)$-polynomials $p(x)$ where $p(x)^2$ has largest coefficient $k$.

Published on 20 Apr 2021 - 1:29

score 246 · Answer 14 · 2026-02-23 06:40:50

246

Views

Octahedron to tetrahedron ratio in generalized polyominoes in the tetrahedral-octahedral honeycomb

Published on 23 Feb 2026 - 6:40

score 80 · Answer 15 · 2021-06-01 15:14:22

80

Views

Brun's theorem - notation

Published on 01 Jun 2021 - 15:14

List Question

Ratio of obtuse triangles to acute triangles in the square.

Contradiction between OEIS and factordb.com

A $2021$ problem: $20\sim 21$ and $43\times 47$

How many combinatorially distinct ways are there to tile an equilateral triangle with $k$ $60^\circ-120^\circ$ trapezoids?

How many "prime" rectangle tilings are there?

Mistake in OEIS A103904?

Does the number of permutations in $S_n$ with major index equal to $k$, satisfy a degree $k$ polynomial?

What is the sum of the series with terms 1/(2/(3/(4/(5/(6/...?

Greatest number of occurrences of the pattern 4213 in a permutation.

Packing density of 2143 and crossing number of complete graph

Chromatic polynomial of the cross-polytope and denominators of convergents to e.

OEIS sequence A308092: run lengths of bits and run lengths of an auxiliary sequence.

The Sierpiński triangle and the number of $(0,1)$-polynomials $p(x)$ where $p(x)^2$ has largest coefficient $k$.

Octahedron to tetrahedron ratio in generalized polyominoes in the tetrahedral-octahedral honeycomb

Brun's theorem - notation

Trending Questions

Popular # Hahtags

Popular Questions