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A140305 Number of n X n binary matrices containing no more than two 1s in any 3 X 3 sub-block. 0
1, 2, 11, 46, 824, 27178, 1020762, 102044420, 20297233254, 6218446852487, 3906297811846469, 4829512709969500388, 10588146860457194561192, 44163637535605999104548698 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Cf. A139810.
Sequence in context: A000176 A042927 A292533 * A229019 A142346 A106980
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 27 2008
STATUS
approved

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Last modified May 1 20:04 EDT 2024. Contains 372176 sequences. (Running on oeis4.)