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A300680 Number of nX6 0..1 arrays with every element equal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 11 2018 08:40:43

%S 1,42,58,245,1382,9015,54361,338173,2152660,13818749,88065216,

%T 561506884,3594611840,22972741078,146835080662,938877932315,

%U 6002943788616,38380680312986,245393290686015,1569003851769309,10031859337955923

%N Number of nX6 0..1 arrays with every element equal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 6 of A300682.

%H R. H. Hardin, <a href="/A300680/b300680.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300682.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 11 2018

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Last modified April 22 10:51 EDT 2024. Contains 371897 sequences. (Running on oeis4.)