A275182 Number of nX7 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,0) or (-1,1) and new values introduced in order 0..2.

365, 4096, 4021, 5653, 25241, 117916, 561044, 2688402, 12931103, 62408531, 302138208, 1466387881, 7128875693, 34691973269, 168923525976, 822823965071, 4008952988381, 19536216274450, 95219416747615, 464168982600409

Offset

1,1

Comments

Column 7 of A275183.

Links

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

R. H. Hardin, Empirical recurrence

Formula

Empirical recurrence of order 67 (see link above)

Example

Some solutions for n=4
..0..0..0..0..1..2..0. .0..0..1..2..0..0..1. .0..1..1..1..2..2..0
..2..2..2..2..0..1..2. .2..2..0..1..1..2..2. .2..2..0..0..1..1..2
..0..1..1..1..2..0..1. .1..1..2..0..0..1..1. .1..1..2..2..0..0..0
..2..0..0..0..1..2..2. .2..0..1..1..2..0..0. .2..0..0..1..1..2..2

Crossrefs

Cf. A275183.

Sequence in context: A259948 A203806 A251314 * A275130 A274727 A175113

Adjacent sequences: A275179 A275180 A275181 * A275183 A275184 A275185

Keyword

nonn

Author

R. H. Hardin, Jul 19 2016

Status

approved