A300924 - OEIS

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A300924

Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

0, 3, 75, 6638, 2244335, 2875574552, 13930396115571, 255391114062230046, 17719358335864533713147, 4652507709547839626397575180, 4622990422099585649225050467889127

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Diagonal of A300930.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..12

EXAMPLE

Some solutions for n=5

..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0

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

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