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A297888 Number of nX7 0..1 arrays with every element equal to 0, 1, 2 or 4 king-move adjacent elements, with upper left element zero. 1

%I #4 Jan 07 2018 16:31:59

%S 64,301,99,223,248,264,433,579,650,1124,1469,2441,3648,5209,7873,

%T 12122,19094,29449,44412,68113,105988,167722,263789,411020,634939,

%U 986095,1564186,2480268,3902903,6131597,9585398,15100840,23997787,38032089

%N Number of nX7 0..1 arrays with every element equal to 0, 1, 2 or 4 king-move adjacent elements, with upper left element zero.

%C Column 7 of A297889.

%H R. H. Hardin, <a href="/A297888/b297888.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=7

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

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

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

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

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

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

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

%Y Cf. A297889.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 07 2018

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)