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A300497 Number of nX7 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
64, 1063, 3699, 14822, 66166, 291721, 1296506, 5589526, 24694845, 110652439, 496922595, 2235496431, 10093633015, 45708631844, 207362510529, 942134125486, 4286125546700, 19519540829724, 88968137138219, 405767287357238 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A300498.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..150

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300498.

Sequence in context: A221247 A280603 A301322 * A300936 A300880 A301490

Adjacent sequences:  A300494 A300495 A300496 * A300498 A300499 A300500

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 07 2018

STATUS

approved

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Last modified October 27 21:22 EDT 2020. Contains 338036 sequences. (Running on oeis4.)