A302149 Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

1, 10, 88, 1038, 12212, 145150, 1728734, 20614702, 245896061, 2933505447, 34997746793, 417542364526, 4981538616301, 59432971386326, 709074352774052, 8459725853179692, 100930145043164198, 1204163804664423408

Offset

1,2

Comments

Column 7 of A302150.

Links

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

R. H. Hardin, Empirical recurrence of order 51

Formula

Empirical recurrence of order 51 (see link above)

Example

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

Crossrefs

Cf. A302150.

Sequence in context: A264320 A298134 A163030 * A269008 A000826 A282555

Adjacent sequences: A302146 A302147 A302148 * A302150 A302151 A302152

Keyword

nonn

Author

R. H. Hardin, Apr 02 2018

Status

approved