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.

A303523 Number of nX6 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

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%I A303523 #4 Apr 25 2018 12:39:41
%S A303523 13,113,286,1875,13031,102779,965150,9961980,109395622,1249312308,
%T A303523 14535068668,170908188530,2021484478581,23981853993648,
%U A303523 284987683948763,3389805878799915,40340446531700113,480206820275333547
%N A303523 Number of nX6 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
%C A303523 Column 6 of A303525.
%H A303523 R. H. Hardin, <a href="/A303523/b303523.txt">Table of n, a(n) for n = 1..210</a>
%e A303523 Some solutions for n=5
%e A303523 ..0..1..0..1..0..1. .0..1..1..0..1..0. .0..1..1..1..0..0. .0..1..0..1..0..1
%e A303523 ..0..0..1..1..0..1. .1..1..1..1..0..0. .1..1..1..1..1..1. .1..1..0..1..1..0
%e A303523 ..1..1..1..1..1..0. .0..1..1..1..1..0. .0..1..1..0..0..1. .1..1..1..1..1..1
%e A303523 ..0..0..1..1..1..1. .0..1..0..1..1..0. .0..0..0..0..0..0. .0..1..0..1..1..1
%e A303523 ..1..1..1..1..1..0. .0..1..0..1..0..1. .0..1..1..0..0..1. .0..1..1..1..1..0
%Y A303523 Cf. A303525.
%K A303523 nonn
%O A303523 1,1
%A A303523 _R. H. Hardin_, Apr 25 2018