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A140311
Number of n X n binary matrices containing no more than eight 1s in any 3 X 3 sub-block.
1
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 27 2008
STATUS
approved