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A316614 Number of n X 7 0..1 arrays with every element unequal to 0, 1, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #6 Sep 25 2021 10:51:22

%S 21,237,245,1074,4719,17224,65158,261426,990387,3768844,14720334,

%T 56653017,217036116,839438654,3238254715,12452927964,48026433042,

%U 185228062557,713410490056,2749613319152,10600692230546,40849824445421

%N Number of n X 7 0..1 arrays with every element unequal to 0, 1, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A316615.

%H R. H. Hardin, <a href="/A316614/b316614.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A316615.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 08 2018

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)