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A300606 Number of n X n 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 0
0, 3, 53, 2347, 263468, 77669371, 59556673490, 118646962163280, 613557423442676836, 8242700694825663880442 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A300612.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300612.

Sequence in context: A300683 A296678 A227051 * A301348 A296680 A118194

Adjacent sequences:  A300603 A300604 A300605 * A300607 A300608 A300609

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 09 2018

STATUS

approved

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Last modified October 16 12:23 EDT 2021. Contains 348041 sequences. (Running on oeis4.)