A047038 T(n,n+3), array T as in A047030.

1, 4, 15, 56, 209, 784, 2958, 11220, 42753, 163548, 627770, 2416804, 9328384, 36087780, 139890764, 543246696, 2113015731, 8230687548, 32102370550, 125358442460, 490049744789, 1917595810240, 7510507532319, 29440544167696

Offset

0,2

Links

Table of n, a(n) for n=0..23.

Crossrefs

Sequence in context: A001353 A010905 A026030 * A158500 A001791 A047128

Adjacent sequences: A047035 A047036 A047037 * A047039 A047040 A047041

Keyword

nonn

Author

Clark Kimberling

Status

approved