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.
%I A234757 #6 Jul 23 2025 08:24:17 %S A234757 712722,392044622,174451064914,81436516016562,37650372740746368, %T A234757 17443322778721788150,8077924001895128842744, %U A234757 3741199763580832200930610,1732660582029609793434136186,802449881238851602750335840920 %N A234757 Number of (n+1)X(5+1) 0..3 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both. %C A234757 Column 5 of A234760 %H A234757 R. H. Hardin, <a href="/A234757/b234757.txt">Table of n, a(n) for n = 1..210</a> %e A234757 Some solutions for n=1 %e A234757 ..1..0..1..3..2..0....0..1..1..2..1..2....3..2..1..0..2..0....1..0..1..2..1..0 %e A234757 ..0..1..2..2..2..1....0..1..1..3..3..3....0..1..2..0..1..0....0..1..0..0..0..1 %K A234757 nonn %O A234757 1,1 %A A234757 _R. H. Hardin_, Dec 30 2013