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 A295918 #4 Nov 29 2017 18:17:33 %S A295918 2,3,3,5,6,5,8,13,13,8,13,28,39,28,13,21,60,115,115,60,21,34,129,337, %T A295918 467,337,129,34,55,277,993,1880,1880,993,277,55,89,595,2919,7604, %U A295918 10290,7604,2919,595,89,144,1278,8587,30721,56955,56955,30721,8587,1278,144,233 %N A295918 T(n,k)=Number of nXk 0..1 arrays with each 1 adjacent to 0 or 3 king-move neighboring 1s. %C A295918 Table starts %C A295918 ..2....3.....5......8......13........21.........34..........55............89 %C A295918 ..3....6....13.....28......60.......129........277.........595..........1278 %C A295918 ..5...13....39....115.....337.......993.......2919........8587.........25257 %C A295918 ..8...28...115....467....1880......7604......30721......124117........501512 %C A295918 .13...60...337...1880...10290.....56955.....314044.....1732883.......9562608 %C A295918 .21..129...993...7604...56955....431844....3261576....24650278.....186318117 %C A295918 .34..277..2919..30721..314044...3261576...33703065...348555744....3605337986 %C A295918 .55..595..8587.124117.1732883..24650278..348555744..4933593439...69844332764 %C A295918 .89.1278.25257.501512.9562608.186318117.3605337986.69844332764.1353357158724 %H A295918 R. H. Hardin, <a href="/A295918/b295918.txt">Table of n, a(n) for n = 1..311</a> %F A295918 Empirical for column k: %F A295918 k=1: a(n) = a(n-1) +a(n-2) %F A295918 k=2: a(n) = a(n-1) +2*a(n-2) +a(n-3) %F A295918 k=3: a(n) = 2*a(n-1) +3*a(n-2) -2*a(n-4) %F A295918 k=4: a(n) = 2*a(n-1) +7*a(n-2) +6*a(n-3) -3*a(n-4) -4*a(n-5) +a(n-6) %F A295918 k=5: [order 38] %F A295918 k=6: [order 92] %e A295918 Some solutions for n=5 k=4 %e A295918 ..0..0..0..1. .0..0..1..0. .0..0..1..0. .0..0..0..0. .0..1..0..0 %e A295918 ..1..0..0..0. .1..0..0..0. .0..0..0..0. .0..0..0..0. .0..0..0..1 %e A295918 ..0..0..0..1. .0..0..1..0. .1..0..0..1. .0..1..0..1. .1..0..0..0 %e A295918 ..0..0..0..0. .1..0..0..0. .0..0..0..0. .0..0..0..0. .0..0..1..0 %e A295918 ..1..0..0..0. .0..0..0..1. .1..0..0..0. .0..0..0..0. .0..0..0..0 %Y A295918 Column 1 is A000045(n+2). %Y A295918 Column 2 is A002478(n+1). %K A295918 nonn,tabl %O A295918 1,1 %A A295918 _R. H. Hardin_, Nov 29 2017