A140311 Number of n X n binary matrices containing no more than eight 1s in any 3 X 3 sub-block.

1, 2, 16, 511, 65089, 33066176, 66993993728, 541344347284385, 17445985904048740529, 2242340146792849255134720, 1149454044962768236388517543936, 2349989206497316681704056634171383423

Offset

0,2

Links

R. H. Hardin, May 27 2008, Table of n, a(n) for n = 0..15

Crossrefs

Cf. A139810.

Sequence in context: A168406 A140310 A168403 * A366513 A366517 A012389

Adjacent sequences: A140308 A140309 A140310 * A140312 A140313 A140314

Keyword

nonn

Author

R. H. Hardin, May 27 2008

Status

approved