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A300880 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
64, 1063, 4297, 34693, 345713, 3260568, 33392871, 350899542, 3640767606, 37969590958, 396898355661, 4145790945869, 43325433803276, 452863444729136, 4733605414721563, 49481042237838159, 517248751223641209 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A300881.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300881.

Sequence in context: A301322 A300497 A300936 * A301490 A223070 A191900

Adjacent sequences:  A300877 A300878 A300879 * A300881 A300882 A300883

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 14 2018

STATUS

approved

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Last modified October 29 04:54 EDT 2020. Contains 338066 sequences. (Running on oeis4.)