A269088 Number of nX7 binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once.

72, 1127, 18590, 268289, 3761534, 50865307, 673690710, 8768989835, 112658396453, 1431998499913, 18044145807959, 225714076389625, 2806025783464923, 34698719581599414, 427098528675334433, 5235801241750340793

Offset

1,1

Comments

Column 7 of A269089.

Links

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

R. H. Hardin, Empirical recurrence of order 68

Formula

Empirical recurrence of order 68 (see link above)

Example

Some solutions for n=3
..0..0..0..0..1..0..0. .1..0..0..0..0..1..0. .0..1..0..1..0..0..0
..0..0..0..0..0..1..1. .0..0..0..0..0..0..0. .0..0..1..0..1..0..0
..0..0..0..0..0..0..0. .1..0..0..0..1..0..0. .0..0..0..0..0..1..0

Crossrefs

Cf. A269089.

Sequence in context: A022148 A192847 A064567 * A168194 A249713 A269074

Adjacent sequences: A269085 A269086 A269087 * A269089 A269090 A269091

Keyword

nonn

Author

R. H. Hardin, Feb 19 2016

Status

approved