A302275 Number of n X 5 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

3, 27, 74, 283, 1219, 3854, 14639, 63093, 222254, 867269, 3651231, 13909218, 55448467, 230250019, 911892066, 3685592711, 15189545391, 61267056156, 249395546907, 1024061684191, 4165273608452, 17011882082021, 69737883682027

Offset

1,1

Comments

Column 5 of A302278.

Links

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

Example

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

Crossrefs

Cf. A302278.

Sequence in context: A305094 A120117 A152759 * A302725 A166102 A316754

Adjacent sequences: A302272 A302273 A302274 * A302276 A302277 A302278

Keyword

nonn

Author

R. H. Hardin, Apr 04 2018

Status

approved