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A301490 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
64, 1063, 4326, 38558, 594953, 8479276, 116648010, 1642511178, 23269383762, 329448536106, 4665726402829, 66101420939287, 936656562909636, 13273745213136152, 188117185109334762, 2666089573263940480 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A301491.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A301491.

Sequence in context: A300497 A300936 A300880 * A223070 A191900 A191494

Adjacent sequences:  A301487 A301488 A301489 * A301491 A301492 A301493

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 22 2018

STATUS

approved

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Last modified October 31 05:06 EDT 2020. Contains 338098 sequences. (Running on oeis4.)