A303186 Number of 6Xn 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

32, 857, 1938, 5050, 29124, 218980, 1064399, 5463686, 31140302, 171614778, 925440030, 5066435983, 27840038592, 152230525027, 832494089795, 4559107237431, 24960324143794, 136607957829075, 747776129893009

Offset

1,1

Comments

Row 6 of A303182.

Links

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

R. H. Hardin, Empirical recurrence of order 84

Formula

Empirical recurrence of order 84 (see link above)

Example

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

Crossrefs

Cf. A303182.

Sequence in context: A281474 A302627 A302419 * A302327 A303020 A302824

Adjacent sequences: A303183 A303184 A303185 * A303187 A303188 A303189

Keyword

nonn

Author

R. H. Hardin, Apr 19 2018

Status

approved