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.

A303194 Number of nX5 0..1 arrays with every element equal to 0, 1, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

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%I A303194 #4 Apr 19 2018 13:34:37
%S A303194 8,25,43,97,523,1751,5573,21575,76833,266179,971949,3482591,12336431,
%T A303194 44409867,159182895,567732335,2035296081,7291955435,26069806559,
%U A303194 93348365103,334298657839,1196193957779,4282016007317,15330901431591
%N A303194 Number of nX5 0..1 arrays with every element equal to 0, 1, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
%C A303194 Column 5 of A303197.
%H A303194 R. H. Hardin, <a href="/A303194/b303194.txt">Table of n, a(n) for n = 1..210</a>
%F A303194 Empirical: a(n) = 2*a(n-1) +a(n-2) +42*a(n-3) -52*a(n-4) -36*a(n-5) -601*a(n-6) +494*a(n-7) +501*a(n-8) +3674*a(n-9) -2252*a(n-10) -3728*a(n-11) -9746*a(n-12) +7102*a(n-13) +11972*a(n-14) +9668*a(n-15) -12696*a(n-16) -18552*a(n-17) -2516*a(n-18) +14464*a(n-19) +17480*a(n-20) +2144*a(n-21) -23696*a(n-22) -4528*a(n-23) +3152*a(n-24) +13280*a(n-25) -7136*a(n-26) -768*a(n-27) +7936*a(n-28) +768*a(n-29) +384*a(n-30) -5120*a(n-31) -256*a(n-32) +2048*a(n-33) for n>37
%e A303194 Some solutions for n=5
%e A303194 ..0..1..0..1..0. .0..1..0..1..0. .0..1..0..0..1. .0..1..0..0..1
%e A303194 ..0..0..0..1..0. .0..0..0..1..0. .0..1..0..1..0. .1..0..0..0..0
%e A303194 ..1..1..0..1..0. .0..1..0..1..0. .0..1..0..1..0. .1..0..1..0..1
%e A303194 ..1..0..1..0..0. .0..1..0..1..1. .0..1..0..0..1. .1..0..1..0..0
%e A303194 ..1..0..1..1..1. .1..0..0..1..0. .0..0..1..0..1. .1..0..1..0..1
%Y A303194 Cf. A303197.
%K A303194 nonn
%O A303194 1,1
%A A303194 _R. H. Hardin_, Apr 19 2018