A134229 Sum of the odd composites A071904 less than or equal to 1+2*10^n.

45, 5975, 724952, 78848811, 8290599189, 857088171080, 87727442181950, 8924793000002668, 904326399306717962, 91382247906379573443, 9216035852504141985766, 928095944723211397518108, 93359489289526851301833406, 9383123076016179512328557690

Offset: 1

Author

Enoch Haga, Oct 14 2007

Keywords

• nonn

Comments

A134228(n) + a(n) = A134230(n).

Examples

			a(1)=45 because that is the sum of the odd composites (9+15+21=45) less than or equal to 21.
		

Crossrefs

Cf. A134228, A134230.

Formula

a(n) = sum{A071904(i): A071904(i) <= 1+2*10^n}. - R. J. Mathar, Oct 28 2007

Extensions

Better definition from R. J. Mathar, Oct 28 2007

a(9)-a(14) from Hiroaki Yamanouchi, Jul 06 2014