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A301444 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 0
1, 8, 171, 9541, 1423344, 564002959, 592006690060, 1646995545166039, 12145346382857661327, 237428255410557186948107 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A301450.

LINKS

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

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

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

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

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

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

CROSSREFS

Cf. A301450.

Sequence in context: A303463 A300805 A317566 * A333036 A247729 A333460

Adjacent sequences:  A301441 A301442 A301443 * A301445 A301446 A301447

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 21 2018

STATUS

approved

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Last modified May 20 12:16 EDT 2022. Contains 353871 sequences. (Running on oeis4.)