A075645 Sums of groups in A075643.

2, 9, 16, 55, 78, 112, 232, 342, 420, 605, 852, 1053, 1330, 1650, 2144, 2601, 3168, 3534, 4420, 5229, 5984, 6670, 7440, 8950, 10478, 11232, 12712, 13775, 15510, 17236, 19200, 20526, 22780, 26040, 27756, 29896, 32452, 35958, 39120, 41533, 45570

Offset

1,1

Comments

a(n) is a multiple of (n+1) by construction.

Links

Table of n, a(n) for n=1..41.

Formula

a(n) = (n+1)*A075646(n). - R. J. Mathar, Jul 17 2026

Crossrefs

Cf. A075643, A075644, A075646, A075647.

Sequence in context: A178440 A097965 A304974 * A185252 A055259 A032299

Adjacent sequences: A075642 A075643 A075644 * A075646 A075647 A075648

Keyword

nonn,changed

Author

Amarnath Murthy, Sep 30 2002

Extensions

More terms from David Wasserman, Jan 22 2005

Status

approved