List questions from catalan-numbers

Published on 10 Jul 2020 - 19:52

264

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Proving $\binom{2n}{n} \geq \frac{2^{2n}}{n+1}$ combinatorially

Published on 19 Jul 2020 - 20:00

37

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Digraphs with exactly one Eulerian Tour

Published on 21 Jul 2020 - 12:00

93

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Number of arrangements of of $1$ and $-1$ such that sum is always non-negative at any point of addition and overall sum is $0$.

Published on 27 Jul 2020 - 8:49

720

Views

Expected number of nodes of degree $1$ in binary tree with $n$ edges

Published on 30 Jul 2020 - 4:15

428

Views

Rewriting product to a binomial

Published on 20 Jul 2016 - 1:19

63

Views

How to formally use Taylor expansions for $n$th derivatives and generating functions?

Published on 27 Jul 2016 - 1:38

52

Views

Trouble deriving the Catalan numbers (near the last step)

Published on 27 Jul 2016 - 19:38

100

Views

Two kinds of Fuss ballot numbers?

Published on 25 Mar 2026 - 12:34

1.8k

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Number of Dyck Paths that touch the diagonal exactly $k$ times?

Published on 23 Aug 2016 - 10:30

214

Views

Number of balanced sequences

Published on 27 Aug 2016 - 14:57

1.2k

Views

Catalan number and Cayley distance inequality in permutation group

Published on 19 Sep 2016 - 15:56

98

Views

2 Related Questions About Finding A Closed Form

Published on 26 Sep 2016 - 23:22

172

Views

Wigner matrices and Catalan numbers

Published on 27 Sep 2016 - 16:47

7.4k

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Rooted Binary Trees and Catalan Numbers

Published on 27 Sep 2016 - 23:29

List Question

North Eastern Lattice Paths.

Proving $\binom{2n}{n} \geq \frac{2^{2n}}{n+1}$ combinatorially

Digraphs with exactly one Eulerian Tour

Number of arrangements of of $1$ and $-1$ such that sum is always non-negative at any point of addition and overall sum is $0$.

Expected number of nodes of degree $1$ in binary tree with $n$ edges

Rewriting product to a binomial

How to formally use Taylor expansions for $n$th derivatives and generating functions?

Trouble deriving the Catalan numbers (near the last step)

Two kinds of Fuss ballot numbers?

Number of Dyck Paths that touch the diagonal exactly $k$ times?

Number of balanced sequences

Catalan number and Cayley distance inequality in permutation group

2 Related Questions About Finding A Closed Form

Wigner matrices and Catalan numbers

Rooted Binary Trees and Catalan Numbers

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