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 A295114 #6 Apr 26 2020 20:47:38 %S A295114 1,5,26,326,8257,420519,43655680,9196006628,3931962260999, %T A295114 3413278465996124,6014918791165296861,21516997694119562490452, %U A295114 156257115416099427263269042,2303561969444050408142747347914 %N A295114 Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 4 1's. %C A295114 Diagonal of A295120. %e A295114 Some solutions for n=5 %e A295114 ..0..0..0..0..0. .1..0..0..1..1. .0..0..0..0..0. .0..0..0..0..1 %e A295114 ..1..1..0..0..0. .1..0..1..0..0. .1..1..0..1..1. .0..0..0..0..1 %e A295114 ..0..0..1..1..0. .0..1..1..1..0. .0..0..1..0..0. .0..0..0..0..0 %e A295114 ..0..1..0..0..0. .0..0..1..0..1. .1..0..1..0..0. .0..0..0..0..1 %e A295114 ..0..1..0..1..1. .0..0..0..0..1. .1..0..0..0..0. .1..1..0..0..1 %Y A295114 Cf. A295120. %K A295114 nonn %O A295114 1,2 %A A295114 _R. H. Hardin_, Nov 15 2017