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A300886 Number of nX6 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1

%I #4 Mar 14 2018 07:28:15

%S 13,6,57,465,5309,47487,437276,3964190,36386491,334574086,3073949150,

%T 28264709588,259824396464,2388691266285,21959166391857,

%U 201876777233381,1855891994460938,17061657000422603,156851812861991078

%N Number of nX6 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Column 6 of A300888.

%H R. H. Hardin, <a href="/A300886/b300886.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A300888.

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 14 2018

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Last modified April 25 07:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)