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 A234759 #6 Jul 23 2025 08:24:31 %S A234759 56585338,237446135146,738613242438722,2459819737238954066, %T A234759 8077924001895128842744,26609690894048025312611822, %U A234759 87598290205388887442345353876,288412121741126213605068521082634 %N A234759 Number of (n+1)X(7+1) 0..3 arrays with 2X2 edge jumps all no more than +1 in one of the clockwise or counterclockwise directions or both. %C A234759 Column 7 of A234760 %H A234759 R. H. Hardin, <a href="/A234759/b234759.txt">Table of n, a(n) for n = 1..210</a> %e A234759 Some solutions for n=1 %e A234759 ..0..0..1..0..1..2..3..3....0..0..0..0..0..1..0..2....0..0..0..1..2..1..3..3 %e A234759 ..0..0..0..1..0..2..2..1....0..0..0..1..0..0..1..1....0..0..0..0..3..2..3..3 %K A234759 nonn %O A234759 1,1 %A A234759 _R. H. Hardin_, Dec 30 2013