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.

64, 8192, 972168, 116517744, 13963574592, 1673186560760, 200493397340704, 24024569786901184, 2878797172114538576, 344958245288471965824, 41335385495979014696632, 4953104083775431293635528

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