A276247 Number of nX7 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,1) or (0,-2) and new values introduced in order 0..2.

48, 1944, 9148, 115682, 1423062, 17450554, 219977330, 2780927371, 35144231606, 446083313365, 5668147759489, 72021229704285, 915757509022000, 11646919947937198, 148122094309974829, 1883921138963266109

Offset

1,1

Comments

Column 7 of A276248.

Links

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

Example

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

Crossrefs

Cf. A276248.

Sequence in context: A231450 A152068 A290404 * A274958 A165043 A301859

Adjacent sequences: A276244 A276245 A276246 * A276248 A276249 A276250

Keyword

nonn

Author

R. H. Hardin, Aug 25 2016

Status

approved