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A180361
Sum of number of unitary divisors (A034444) from 1 to 10^n
2
1, 23, 359, 4987, 63869, 778581, 9185685, 105854997, 1198530315, 13385107495, 147849112851, 1618471517571, 17584519050293, 189843229312125, 2038412681323151, 21783930695524161, 231837345778656901
OFFSET
0,2
LINKS
FORMULA
a(n)=A064608(10^n)
CROSSREFS
KEYWORD
nonn
AUTHOR
Andrew Lelechenko, Jan 19 2011
EXTENSIONS
a(3) corrected from 4983 to 4987 by Henri Lifchitz, Nov 07 2017
a(17)-a(23) from Henri Lifchitz, Nov 07 2017
STATUS
approved