A124682 a(n) = A002861(n) + A000081(n).

2, 3, 6, 13, 29, 71, 173, 444, 1148, 3030, 8059, 21715, 58836, 160687, 441083, 1217134, 3372386, 9380948, 26180962, 73292358, 205731862, 578922864, 1632707684, 4614098810, 13064064882, 37052720050, 105257568244, 299452309023, 853094139960, 2433439189419

Offset: 1

Author

N. J. A. Sloane, Dec 26 2006

Keywords

• nonn

Crossrefs

See A126285.