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A145012 Half the number of n X n nonnegative integer arrays with every 2 X 2 subblock summing to 2. 0
5, 17, 37, 95, 185, 431, 805, 1799, 3305, 7247, 13237, 28775, 52505, 113711 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,1
LINKS
CROSSREFS
Sequence in context: A048209 A181423 A146874 * A360204 A147204 A168024
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 29 2008
EXTENSIONS
Changed positive (programmer's definition) to nonnegative (mathematician's definition), added n X n. - R. H. Hardin, Sep 30 2008
STATUS
approved

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Last modified April 16 05:35 EDT 2024. Contains 371697 sequences. (Running on oeis4.)