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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.

A298136 Number of n X 5 0..1 arrays with every element equal to 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

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%I A298136 #6 Apr 14 2023 15:49:21
%S A298136 0,11,0,20,88,242,627,2604,8137,28727,101137,350450,1221711,4290711,
%T A298136 14968081,52427734,183691236,643194452,2252416158,7891461835,
%U A298136 27639419217,96818359023,339160988868,1188063187221,4161765906348,14578893452507
%N A298136 Number of n X 5 0..1 arrays with every element equal to 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.
%C A298136 Column 5 of A298139.
%H A298136 R. H. Hardin, <a href="/A298136/b298136.txt">Table of n, a(n) for n = 1..210</a>
%e A298136 Some solutions for n=7
%e A298136 ..0..0..1..0..0. .0..0..0..0..0. .0..0..1..0..0. .0..0..1..1..1
%e A298136 ..1..0..1..1..0. .0..1..1..1..0. .0..1..0..1..0. .0..1..0..0..1
%e A298136 ..1..1..0..0..1. .1..0..0..1..1. .0..1..0..1..0. .0..1..1..1..0
%e A298136 ..1..0..1..1..0. .1..0..1..0..1. .1..0..0..1..0. .1..0..0..0..1
%e A298136 ..1..0..1..0..0. .1..0..1..0..1. .1..0..0..0..1. .1..0..1..1..1
%e A298136 ..1..0..1..0..1. .1..0..1..0..1. .0..1..0..1..0. .0..1..1..0..1
%e A298136 ..1..1..0..1..1. .1..1..0..1..1. .0..0..1..0..0. .0..0..0..0..0
%Y A298136 Cf. A298139.
%K A298136 nonn
%O A298136 1,2
%A A298136 _R. H. Hardin_, Jan 13 2018