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A317219 Number of nX5 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jul 23 2018 19:48:21

%S 3,383,6134,133874,2762836,57448875,1193567097,24804953660,

%T 515450451064,10711595142649,222596927927964,4625779935011570,

%U 96128248582112606,1997639685439895587,41512923795942886176,862679553084330667877

%N Number of nX5 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 5 of A317222.

%H R. H. Hardin, <a href="/A317219/b317219.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A317222.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 23 2018

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Last modified March 29 06:44 EDT 2024. Contains 371265 sequences. (Running on oeis4.)