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A302802 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 0
1, 8, 169, 8718, 1089773, 327603711, 238687785290, 420681832487223, 1791195821074091291 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A302808.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=5

..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..1. .0..0..0..0..1

..0..1..1..1..1. .0..1..1..0..0. .1..1..1..1..0. .0..0..1..1..1

..1..1..1..0..0. .1..0..0..1..0. .0..0..0..0..1. .1..0..1..0..1

..0..1..0..1..1. .0..0..1..1..0. .0..1..1..0..0. .0..1..1..0..1

..0..1..1..0..0. .0..0..1..1..1. .1..1..1..1..0. .0..0..0..1..1

CROSSREFS

Cf. A302808.

Sequence in context: A139564 A264113 A181198 * A316816 A001534 A096486

Adjacent sequences:  A302799 A302800 A302801 * A302803 A302804 A302805

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 13 2018

STATUS

approved

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Last modified December 1 03:57 EST 2021. Contains 349426 sequences. (Running on oeis4.)