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A301406 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 20 2018 11:11:01

%S 64,8192,975492,117605364,14160945920,1705287652128,205353183605152,

%T 24728921469216800,2977891883234338384,358601972693344501136,

%U 43183359211755735932560,5200201490023385537322336

%N Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A301407.

%H R. H. Hardin, <a href="/A301406/b301406.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A301406/a301406.txt">Empirical recurrence of order 45</a>

%F Empirical recurrence of order 45 (see link above)

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A301407.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 20 2018

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Last modified April 24 02:46 EDT 2024. Contains 371917 sequences. (Running on oeis4.)