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 A302738 #4 Apr 12 2018 11:19:32 %S A302738 16,512,11814,285613,6947036,168833401,4104946296,99807877377, %T A302738 2426739457531,59004229082101,1434640787398200,34882150655708793, %U A302738 848131798093298119,20621651341736039102,501399081664691938244 %N A302738 Number of nX5 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. %C A302738 Column 5 of A302741. %H A302738 R. H. Hardin, <a href="/A302738/b302738.txt">Table of n, a(n) for n = 1..210</a> %F A302738 Empirical: a(n) = 22*a(n-1) +83*a(n-2) -348*a(n-3) -7035*a(n-4) -12847*a(n-5) +101126*a(n-6) +715314*a(n-7) +551768*a(n-8) -7976480*a(n-9) -28155124*a(n-10) +2223552*a(n-11) +225326378*a(n-12) +398991738*a(n-13) -381402071*a(n-14) -1855238986*a(n-15) -1195015793*a(n-16) +2403141606*a(n-17) +3529071043*a(n-18) -880293737*a(n-19) -3044285462*a(n-20) +3274803791*a(n-21) +8578409618*a(n-22) +33030614*a(n-23) -15141436247*a(n-24) -15534577096*a(n-25) +3742098782*a(n-26) +20424779659*a(n-27) +13937583556*a(n-28) -7123915776*a(n-29) -17656823459*a(n-30) -8146649764*a(n-31) +6692884054*a(n-32) +10427831751*a(n-33) +4098906129*a(n-34) -1206533270*a(n-35) -1528012560*a(n-36) -444188050*a(n-37) -263602856*a(n-38) -358593728*a(n-39) -242520692*a(n-40) -110328384*a(n-41) -49499632*a(n-42) -16170992*a(n-43) -4119712*a(n-44) -592880*a(n-45) -34752*a(n-46) %e A302738 Some solutions for n=5 %e A302738 ..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0 %e A302738 ..0..0..1..1..0. .0..1..0..1..0. .0..0..0..1..0. .0..0..0..1..1 %e A302738 ..0..0..1..0..1. .0..1..1..0..1. .1..0..1..1..1. .1..0..1..1..1 %e A302738 ..1..1..0..0..0. .1..0..1..0..0. .1..0..0..1..0. .0..1..0..0..0 %e A302738 ..1..1..0..0..1. .0..0..0..1..0. .1..1..1..0..0. .1..0..0..1..1 %Y A302738 Cf. A302741. %K A302738 nonn %O A302738 1,1 %A A302738 _R. H. Hardin_, Apr 12 2018