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A297581 Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 4 neighboring 1s. 1

%I #4 Jan 01 2018 11:11:24

%S 13,183,2085,20771,284289,3355439,38609160,476513137,5731862594,

%T 67900170433,820250735104,9868451991387,117996838335341,

%U 1418191530812586,17043255221943522,204368024253087875,2453682222488823920

%N Number of nX7 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 4 neighboring 1s.

%C Column 7 of A297582.

%H R. H. Hardin, <a href="/A297581/b297581.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%Y Cf. A297582.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 01 2018

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Last modified February 21 19:15 EST 2024. Contains 370237 sequences. (Running on oeis4.)