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A301437 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 8, 232, 23672, 8525992, 10857946336, 48849438137664, 776405369595079784, 43592748615027181849168, 8646411638193087437385791320, 6058323543759078862550444562319392 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A301443.

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

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

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

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

CROSSREFS

Cf. A301443.

Sequence in context: A222525 A214351 A303450 * A111836 A288546 A134504

Adjacent sequences: A301434 A301435 A301436 * A301438 A301439 A301440

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 21 2018

STATUS

approved

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Last modified January 31 22:19 EST 2023. Contains 359981 sequences. (Running on oeis4.)