A132807 A000108(n) + A000079(n) - 1.

1, 2, 5, 12, 29, 73, 195, 556, 1685, 5373

Offset

0,2

Links

Table of n, a(n) for n=0..9.

Formula

a(n) = C(n) + 2^n - 1.

Example

a(3) = 12 = C(3) + 2^3 - 1 = 5 + 8 = 1.

Crossrefs

Cf. A000108, A000079.

Sequence in context: A089372 A036671 A152171 * A261234 A368984 A324787

Adjacent sequences: A132804 A132805 A132806 * A132808 A132809 A132810

Keyword

nonn

Author

Gary W. Adamson, Aug 31 2007

Status

approved