As in title: Does oeis.org store sequences made of pairs of integers, like: $$(1,1),(2,2),(3,3),...,$$
If so, then how can I search for one?
2026-03-26 11:00:51.1774522851
Can OEIS be used for searching of sequences of pairs?
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Yes, the OEIS contains sequences of pairs, triples, etc. Generally they are encoded as several sequences. For example, the Bernouli numbers are A027641/A027642 and the solutions (x,y) of $x^2+(x+31)^2=y^2$ are (A118674, A157646). Some rare sequences encode pairs as (a(1), a(2)), (a(3), a(4)), etc.
Collections of sequences are often given as a two-dimensional table read by antidiagonals.
If you like, give me your sequence (in a comment) and I'll see if it's in the OEIS.