A145012 Half the number of n X n nonnegative integer arrays with every 2 X 2 subblock summing to 2.

5, 17, 37, 95, 185, 431, 805, 1799, 3305, 7247, 13237, 28775, 52505, 113711

Offset

2,1

Links

Table of n, a(n) for n=2..15.

Crossrefs

Sequence in context: A048209 A181423 A146874 * A360204 A147204 A168024

Adjacent sequences: A145009 A145010 A145011 * A145013 A145014 A145015

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