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A140308 Number of n X n binary matrices containing no more than five 1s in any 3 X 3 sub-block. 0
1, 2, 16, 382, 33940, 10537021, 10478502929, 36396596300106, 433087032815881242, 17394297682298725368562 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..9.

CROSSREFS

Cf. A139810.

Sequence in context: A015201 A227406 A068471 * A280723 A052737 A002474

Adjacent sequences:  A140305 A140306 A140307 * A140309 A140310 A140311

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 27 2008

STATUS

approved

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Last modified April 20 16:17 EDT 2019. Contains 322310 sequences. (Running on oeis4.)