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A300532 Number of nXn 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 0
1, 3, 12, 300, 12951, 1972991, 831752031, 946782030618, 2954430191005674, 25119015182967409981 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A300539.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300539.

Sequence in context: A297564 A280086 A102945 * A249940 A132515 A279122

Adjacent sequences:  A300529 A300530 A300531 * A300533 A300534 A300535

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 08 2018

STATUS

approved

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Last modified May 31 16:29 EDT 2020. Contains 334748 sequences. (Running on oeis4.)