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A303420 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
64, 8192, 972168, 116517744, 13963574592, 1673186560760, 200493397340704, 24024569786901184, 2878797172114538576, 344958245288471965824, 41335385495979014696632, 4953104083775431293635528 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A303421.

LINKS

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

R. H. Hardin, Empirical recurrence of order 58

FORMULA

Empirical recurrence of order 58 (see link above)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A303421.

Sequence in context: A317524 A299653 A300207 * A301406 A303426 A317516

Adjacent sequences:  A303417 A303418 A303419 * A303421 A303422 A303423

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 23 2018

STATUS

approved

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Last modified May 9 19:47 EDT 2021. Contains 343746 sequences. (Running on oeis4.)