A134229 - OEIS

%I #12 Oct 17 2014 22:49:52

%S 45,5975,724952,78848811,8290599189,857088171080,87727442181950,

%T 8924793000002668,904326399306717962,91382247906379573443,

%U 9216035852504141985766,928095944723211397518108,93359489289526851301833406,9383123076016179512328557690

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

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

%F Beginning with 3, compute 10^n sums of odd composites.

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

%e a(1)=45 because that is the sum of the odd composites (9+15+21)=45) under 10^1 (beginning with 3).

%Y Cf. A134228, A134230.

%K nonn

%O 1,1

%A _Enoch Haga_, Oct 14 2007

%E Better definition from _R. J. Mathar_, Oct 28 2007

%E a(9)-a(14) from _Hiroaki Yamanouchi_, Jul 06 2014