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A306164 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero. 1

%I #4 Jun 23 2018 12:45:13

%S 32,45,207,962,4849,25226,128710,660871,3402775,17536734,90189989,

%T 464083933,2390028219,12302770116,63317986986,325946070229,

%U 1677929368349,8637050520961,44459022462216,228858922197372,1178074204583981

%N Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

%C Column 6 of A306166.

%H R. H. Hardin, <a href="/A306164/b306164.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A306166.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 23 2018

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Last modified April 19 04:35 EDT 2024. Contains 371782 sequences. (Running on oeis4.)