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 A301319 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 0

%I

%S 1,7,45,302,1649,7600,31172,119694,446581,1658182,6211592,23593138,

%T 91031007,354490536,1502008575,5520750802,463638209284

%N Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

%C Diagonal of A301323.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A301323.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 18 2018

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Last modified November 29 14:23 EST 2020. Contains 338769 sequences. (Running on oeis4.)