A145013 One quarter of the number of n X n nonnegative integer arrays with every 2 X 2 subblock summing to 3.

5, 26, 79, 293, 779, 2555, 6475, 20111, 50195, 151991

Offset

2,1

Links

Table of n, a(n) for n=2..11.

Crossrefs

Sequence in context: A081530 A254831 A360350 * A096943 A166810 A210367

Adjacent sequences: A145010 A145011 A145012 * A145014 A145015 A145016

Keyword

nonn

Author

R. H. Hardin, Sep 29 2008

Extensions

Changed positive to nonnegative, added n X n. - R. H. Hardin, Sep 30 2008

Status

approved