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A301406 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
64, 8192, 975492, 117605364, 14160945920, 1705287652128, 205353183605152, 24728921469216800, 2977891883234338384, 358601972693344501136, 43183359211755735932560, 5200201490023385537322336 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A301407.

LINKS

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

R. H. Hardin, Empirical recurrence of order 45

FORMULA

Empirical recurrence of order 45 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A301407.

Sequence in context: A299653 A300207 A303420 * A303426 A317516 A300181

Adjacent sequences:  A301403 A301404 A301405 * A301407 A301408 A301409

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 20 2018

STATUS

approved

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Last modified May 16 09:28 EDT 2021. Contains 343940 sequences. (Running on oeis4.)