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.

A229389 Number of nX5 0..3 arrays of the sum of the corresponding element, the element to the east and the element to the south in a larger (n+1)X6 0..1 array.

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%I A229389 #6 Jul 23 2025 05:42:29
%S A229389 560,68672,5212236,345788172,22494002188,1451228983308,93250181644300,
%T A229389 5979900142878732,383094040360124428,24530192376561401868,
%U A229389 1570321873470780080140,100513065865910817914892
%N A229389 Number of nX5 0..3 arrays of the sum of the corresponding element, the element to the east and the element to the south in a larger (n+1)X6 0..1 array.
%C A229389 Column 5 of A229392
%H A229389 R. H. Hardin, <a href="/A229389/b229389.txt">Table of n, a(n) for n = 1..139</a>
%F A229389 Empirical: a(n) = 101*a(n-1) -2532*a(n-2) +10624*a(n-3) -8192*a(n-4) for n>7
%e A229389 Some solutions for n=2
%e A229389 ..3..2..1..3..2....2..2..2..1..2....2..3..2..2..1....2..2..2..0..1
%e A229389 ..3..1..1..1..2....2..3..2..1..1....2..2..1..1..0....1..2..1..0..1
%K A229389 nonn
%O A229389 1,1
%A A229389 _R. H. Hardin_ Sep 21 2013