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 A180365 Partial sums up to 10^n of A007425. 3
 1, 53, 1471, 29425, 496623, 7518850, 106030594, 1421760251, 18362473634, 230375375227, 2824280446479, 33978264556380, 402439152166882, 4703975577244852, 54365786164534232, 622220063695532731, 7060841638683030355, 79525016215415440837 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Hiroaki Yamanouchi, Table of n, a(n) for n = 0..21 FORMULA a(n) = A061201(10^n). PROG (PARI) a(n)=sum(k=1, 10^n, numdiv(k)*floor((10^n)/k)); vector(7, n, a(n-1)) \\ Altug Alkan, Sep 24 2015 CROSSREFS Cf. A007425, A061201. Sequence in context: A091548 A017769 A017716 * A210783 A221237 A059694 Adjacent sequences:  A180362 A180363 A180364 * A180366 A180367 A180368 KEYWORD nonn AUTHOR Andrew Lelechenko, Jan 19 2011 EXTENSIONS One more term (a(16)) and typo in crossrefs fixed by Andrew Lelechenko, Apr 13 2011 a(17) from Hiroaki Yamanouchi, Jul 15 2014 STATUS approved

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