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A301348 Number of n X n 0..1 arrays with every element equal to 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 0
0, 3, 53, 2349, 264054, 78012336, 59990521481, 119913579672155, 622564600937446253, 8402046535849070738107 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A301354.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A301354.

Sequence in context: A296678 A227051 A300606 * A296680 A118194 A325725

Adjacent sequences:  A301345 A301346 A301347 * A301349 A301350 A301351

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 19 2018

STATUS

approved

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Last modified October 16 23:55 EDT 2021. Contains 348048 sequences. (Running on oeis4.)