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 A232083 #6 Jul 23 2025 06:52:48 %S A232083 3809,1193537,164650280,34420057373,7588839921175,1623332441842096, %T A232083 346245388962998639,73998528709201418867,15817322237857233639836, %U A232083 3380527884608408309224127,722490763842803146891010551 %N A232083 Number of (7+1)X(n+1) 0..1 arrays with every element equal to some horizontal, diagonal or antidiagonal neighbor, with top left element zero. %C A232083 Row 7 of A232076 %H A232083 R. H. Hardin, <a href="/A232083/b232083.txt">Table of n, a(n) for n = 1..210</a> %e A232083 Some solutions for n=1 %e A232083 ..0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..1....0..1 %e A232083 ..0..0....0..0....1..0....0..1....0..1....1..0....1..1....1..0....1..0....1..0 %e A232083 ..0..1....0..0....0..1....1..0....1..1....0..1....1..1....1..1....0..0....0..0 %e A232083 ..1..0....0..1....1..0....0..1....1..1....1..0....0..1....1..1....0..0....1..1 %e A232083 ..0..1....1..1....0..1....1..0....1..0....0..1....1..0....0..0....1..1....1..1 %e A232083 ..1..1....0..1....0..1....1..0....0..0....1..0....0..1....1..1....1..1....0..0 %e A232083 ..0..1....0..0....1..0....0..1....0..0....0..1....1..0....1..0....0..0....1..1 %e A232083 ..0..0....1..1....1..1....1..1....1..1....1..1....0..0....0..1....0..0....1..1 %K A232083 nonn %O A232083 1,1 %A A232083 _R. H. Hardin_, Nov 17 2013