A047090 Sum{T(i,n-i): i=0,1,...,n}, array T as in A047089.

1, 2, 3, 6, 12, 21, 42, 84, 155, 310, 620, 1176, 2352, 4704, 9071, 18142, 36284, 70717, 141434, 282868, 555268, 1110536, 2221072, 4381656, 8763312, 17526624, 34697879, 69395758, 138791516, 275467455, 550934910, 1101869820, 2191008499

Offset

0,2

Links

Table of n, a(n) for n=0..32.

Crossrefs

Sequence in context: A081156 A326172 A082877 * A185265 A018178 A112575

Adjacent sequences: A047087 A047088 A047089 * A047091 A047092 A047093

Keyword

nonn

Author

Clark Kimberling

Status

approved