cp's OEIS Frontend

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.

A303318 Number of 6Xn 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

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%I A303318 #4 Apr 21 2018 12:51:20
%S A303318 32,14,34,165,349,1221,7096,30280,102683,403872,1783894,7248640,
%T A303318 27856927,111871711,461547267,1859721535,7397094062,29793428041,
%U A303318 120739708314,486065859963,1951092593903,7859276232228,31701254570200,127635189909079
%N A303318 Number of 6Xn 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
%C A303318 Row 6 of A303314.
%H A303318 R. H. Hardin, <a href="/A303318/b303318.txt">Table of n, a(n) for n = 1..210</a>
%F A303318 Empirical: a(n) = a(n-1) +3*a(n-2) +18*a(n-3) +87*a(n-4) +23*a(n-5) -149*a(n-6) -305*a(n-7) -678*a(n-8) -45*a(n-9) +981*a(n-10) +937*a(n-11) +1834*a(n-12) +317*a(n-13) -1968*a(n-14) -1457*a(n-15) -2157*a(n-16) -964*a(n-17) +830*a(n-18) +254*a(n-19) +161*a(n-20) +152*a(n-21) -15*a(n-22) -3*a(n-23) for n>28
%e A303318 Some solutions for n=5
%e A303318 ..0..1..1..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..1
%e A303318 ..0..1..0..1..0. .0..1..0..1..0. .0..1..1..0..0. .0..1..0..0..0
%e A303318 ..0..0..0..1..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..1..1..0
%e A303318 ..0..1..1..1..0. .0..0..0..1..0. .0..1..0..1..0. .0..1..0..1..0
%e A303318 ..0..1..0..0..0. .0..1..1..1..0. .0..1..0..1..0. .0..0..0..1..0
%e A303318 ..0..1..0..1..0. .0..1..0..1..0. .0..1..1..1..0. .0..1..0..1..0
%Y A303318 Cf. A303314.
%K A303318 nonn
%O A303318 1,1
%A A303318 _R. H. Hardin_, Apr 21 2018