A173449 Partial sums of A006894.

1, 3, 7, 18, 85, 2364, 2600425, 3374964379317, 5695183504495988993642596, 16217557574922386301420542667438374091771757190157, 131504586847961235687181874578063117114329409897631406061666638548823646377599560502379804093488299

Offset: 1

Author

Jonathan Vos Post, Feb 18 2010

Keywords

• nonn

Crossrefs

Cf. A006894.

Formula

a(n) = Sum_{i=1..n} A006894(i).

Extensions

a(11) corrected by Georg Fischer, Aug 28 2020