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.

A232332 Number of n X 5 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal.

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%I A232332 #8 Oct 04 2018 11:50:28
%S A232332 10,82,628,4906,38986,312276,2510674,20221026,162993780,1314329242,
%T A232332 10600203674,85498798420,689639995266,5562789156722,44871062410868,
%U A232332 361944328742026,2919563842456426,23550196645340116,189963983083385394
%N A232332 Number of n X 5 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal.
%H A232332 R. H. Hardin, <a href="/A232332/b232332.txt">Table of n, a(n) for n = 1..210</a>
%F A232332 Empirical: a(n) = 11*a(n-1) - 21*a(n-2) - 20*a(n-3) - 12*a(n-4) for n>5.
%F A232332 Empirical g.f.: 2*x*(5 - 14*x - 32*x^2 - 40*x^3 - 16*x^4) / (1 - 11*x + 21*x^2 + 20*x^3 + 12*x^4). - _Colin Barker_, Oct 04 2018
%e A232332 Some solutions for n=6:
%e A232332 ..0..1..2..1..0....0..1..2..1..2....0..1..2..1..0....0..1..2..1..0
%e A232332 ..2..1..0..1..2....0..1..2..1..2....0..1..2..1..2....2..1..2..1..2
%e A232332 ..2..1..2..1..0....0..1..2..1..2....0..1..0..1..0....0..1..2..1..0
%e A232332 ..0..1..2..1..0....2..1..0..1..0....2..1..2..1..0....0..1..0..1..2
%e A232332 ..0..1..2..1..0....2..1..2..1..0....0..1..0..1..2....0..1..2..1..0
%e A232332 ..0..1..0..1..2....0..1..0..1..2....2..1..0..1..0....0..1..0..2..1
%Y A232332 Column 5 of A232335.
%K A232332 nonn
%O A232332 1,1
%A A232332 _R. H. Hardin_, Nov 22 2013