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A303101 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Apr 18 2018 12:38:24

%S 8,2208,128921,8650205,568099880,37220475492,2441756629583,

%T 160164698180399,10505922762123798,689141410588573095,

%U 45204400412352498100,2965196935043545360686,194503015320143538663000

%N Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

%C Column 7 of A303102.

%H R. H. Hardin, <a href="/A303101/b303101.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A303102.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 18 2018

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Last modified April 18 03:01 EDT 2024. Contains 371767 sequences. (Running on oeis4.)