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 A303528 #4 Apr 25 2018 12:43:15 %S A303528 16,21,95,340,1758,13031,87730,569770,4036330,30394943,222697188, %T A303528 1602691484,11764661177,87557106997,645627405743,4729643084580, %U A303528 34840151966126,257693611496166,1900371011202758,13983289362523029 %N A303528 Number of 5Xn 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A303528 Row 5 of A303525. %H A303528 R. H. Hardin, <a href="/A303528/b303528.txt">Table of n, a(n) for n = 1..210</a> %e A303528 Some solutions for n=5 %e A303528 ..0..0..1..0..1. .0..1..0..1..0. .0..1..1..1..0. .0..0..0..0..1 %e A303528 ..0..1..0..0..1. .0..1..0..1..0. .1..0..1..1..1. .1..1..0..0..0 %e A303528 ..0..1..0..0..0. .0..1..0..0..0. .1..0..1..1..1. .1..0..1..0..0 %e A303528 ..0..1..0..0..1. .0..1..1..1..0. .1..1..1..1..1. .0..0..0..0..1 %e A303528 ..0..0..1..0..1. .0..1..0..1..0. .1..0..1..1..0. .1..0..0..1..0 %Y A303528 Cf. A303525. %K A303528 nonn %O A303528 1,1 %A A303528 _R. H. Hardin_, Apr 25 2018