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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A183826 1/256 the number of (n+1)X8 0..3 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.

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%I A183826 #6 Jul 22 2025 09:13:16
%S A183826 11390625,376152548283,12225396762980829,399185865558804067443,
%T A183826 13018181193595377140956551
%N A183826 1/256 the number of (n+1)X8 0..3 arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor.
%C A183826 Column 7 of A183827
%e A183826 Some solutions with upper left block zero for 3X8
%e A183826 ..0..0..1..2..0..0..0..2....0..0..1..2..0..1..0..1....0..0..1..0..0..0..0..2
%e A183826 ..0..0..0..3..0..0..2..2....0..0..0..3..0..3..2..2....0..0..0..1..0..0..2..1
%e A183826 ..0..2..1..1..0..3..0..3....0..1..1..1..0..2..0..3....0..1..1..2..0..2..0..0
%K A183826 nonn
%O A183826 1,1
%A A183826 _R. H. Hardin_ Jan 07 2011

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