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A145052 One-third of the number of n X n nonnegative integer arrays with every 3 X 3 subblock summing to 1. +0
1
3, 7, 11, 15, 27, 39, 51, 87, 123, 159, 267, 375, 483, 807, 1131, 1455, 2427, 3399, 4371, 7287, 10203, 13119, 21867, 30615 (list; graph; listen)
OFFSET

3,1
CROSSREFS

Sequence in context: A160808 A151567 A139250 this_sequence A100900 A117829 A166092

Adjacent sequences: A145049 A145050 A145051 this_sequence A145053 A145054 A145055

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net), Sep 30 2008

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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