A303461 Number of 7 X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 8192, 664512, 55781418, 4726484016, 401405461699, 34135836415352, 2903926612610439, 247077958107897280, 21023477490350193047, 1788894134950802044639, 152218675999461862651686

Offset

1,1

Comments

Row 7 of A303456.

Links

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

Example

Some solutions for n=5
..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..0..1..0..1..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..0..0..1..0..0. .0..1..0..1..0. .1..1..1..1..1. .1..1..1..1..1
..1..1..1..1..0. .1..1..1..0..1. .0..0..1..1..1. .0..0..0..1..1
..1..0..0..0..1. .0..0..1..1..0. .1..0..0..1..0. .0..1..0..0..1
..0..0..0..1..1. .0..1..0..1..1. .0..0..0..1..1. .1..1..1..0..1

Crossrefs

Cf. A303456.

Sequence in context: A302746 A300803 A303455 * A301442 A302014 A302009

Adjacent sequences: A303458 A303459 A303460 * A303462 A303463 A303464

Keyword

nonn

Author

R. H. Hardin, Apr 24 2018

Status

approved