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A295114 Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 4 1's. 0

%I

%S 1,5,26,326,8257,420519,43655680,9196006628,3931962260999,

%T 3413278465996124,6014918791165296861,21516997694119562490452,

%U 156257115416099427263269042,2303561969444050408142747347914

%N Number of n X n 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 4 1's.

%C Diagonal of A295120.

%e Some solutions for n=5

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

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

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

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

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

%Y Cf. A295120.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 15 2017

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Last modified June 26 16:55 EDT 2022. Contains 354885 sequences. (Running on oeis4.)