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A299609 Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Feb 14 2018 07:12:59

%S 3,23,23,85,179,453,1006,2523,6002,14802,36299,87591,214486,522937,

%T 1275628,3120041,7614933,18586581,45384416,110821038,270585507,

%U 660827950,1613737854,3940683638,9622959317,23498981429,57383159995,140126697433

%N Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

%C Column 5 of A299612.

%H R. H. Hardin, <a href="/A299609/b299609.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=6

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

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

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

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

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

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

%Y Cf. A299612.

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 14 2018

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Last modified April 23 11:35 EDT 2024. Contains 371912 sequences. (Running on oeis4.)