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.

A275128 Number of nX5 0..2 arrays with no element equal to any value at offset (-2,-2) (-1,0) or (-1,1) and new values introduced in order 0..2.

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%I A275128 #4 Jul 17 2016 10:58:42
%S A275128 41,256,675,2545,12423,62378,315021,1591442,8024937,40445177,
%T A275128 203778488,1026594464,5172646773,26068048495,131374129725,
%U A275128 662045442417,3336258461916,16812605674569,84724677500065,426956397683686
%N A275128 Number of nX5 0..2 arrays with no element equal to any value at offset (-2,-2) (-1,0) or (-1,1) and new values introduced in order 0..2.
%C A275128 Column 5 of A275131.
%H A275128 R. H. Hardin, <a href="/A275128/b275128.txt">Table of n, a(n) for n = 1..210</a>
%F A275128 Empirical: a(n) = 8*a(n-1) -27*a(n-2) +79*a(n-3) -99*a(n-4) -81*a(n-5) +860*a(n-6) -1162*a(n-7) -868*a(n-8) +1676*a(n-9) -3352*a(n-10) -1549*a(n-11) +4857*a(n-12) +1164*a(n-13) +3213*a(n-14) +5946*a(n-15) -1377*a(n-16) -5652*a(n-17) -4880*a(n-18) -2760*a(n-19) -710*a(n-20) +595*a(n-21) +1142*a(n-22) +594*a(n-23) +71*a(n-24) +48*a(n-25) +20*a(n-26) +a(n-28) for n>31
%e A275128 Some solutions for n=4
%e A275128 ..0..1..0..2..1. .0..1..1..2..2. .0..0..1..1..2. .0..0..0..1..1
%e A275128 ..2..2..1..0..0. .2..0..0..1..1. .2..2..0..0..0. .1..1..2..2..0
%e A275128 ..0..0..2..2..2. .1..2..2..0..0. .0..1..1..2..2. .0..0..1..1..2
%e A275128 ..2..1..1..1..0. .0..1..1..2..2. .2..0..0..1..1. .2..2..0..0..1
%Y A275128 Cf. A275131.
%K A275128 nonn
%O A275128 1,1
%A A275128 _R. H. Hardin_, Jul 17 2016