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A302476 Number of 6Xn 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Apr 08 2018 10:19:34

%S 0,361,5486,53575,990266,16983273,278275383,4682106140,78091963061,

%T 1304871157349,21829592367835,364830266619813,6098698249636345,

%U 101957315261866452,1704401567489761285,28492535448530089581

%N Number of 6Xn 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Row 6 of A302472.

%H R. H. Hardin, <a href="/A302476/b302476.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..0..0..1..0. .0..0..0..1..0. .0..0..0..1..0. .0..0..0..1..0

%e ..0..1..1..0..1. .0..1..1..0..1. .0..1..1..0..1. .1..0..1..0..0

%e ..0..1..1..0..0. .0..0..1..1..0. .0..0..1..1..0. .1..1..0..0..0

%e ..0..0..1..1..0. .1..0..1..0..1. .0..0..1..0..1. .0..1..0..1..0

%e ..1..0..0..1..1. .1..1..0..0..1. .0..0..1..1..0. .0..0..0..1..1

%e ..1..1..0..1..1. .1..1..1..1..1. .0..0..1..0..1. .0..1..1..0..0

%Y Cf. A302472.

%K nonn

%O 1,2

%A _R. H. Hardin_, Apr 08 2018

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Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)