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A101310 Sum((prime(k)*10^(k),k=1..n))). 0
0, 20, 320, 5320, 75320, 1175320, 14175320, 184175320, 2084175320, 25084175320, 315084175320, 3415084175320, 40415084175320, 450415084175320, 4750415084175320, 51750415084175320, 581750415084175320 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..16.

MAPLE

seq( ( sum((ithprime(x)*10^(x), x=1..a))), a=1..20);

MATHEMATICA

Accumulate[Join[{0}, Table[Prime[k]10^k, {k, 30}]]] (* Harvey P. Dale, Dec 18 2016 *)

CROSSREFS

Sequence in context: A111778 A024387 A307173 * A229775 A159648 A078230

Adjacent sequences:  A101307 A101308 A101309 * A101311 A101312 A101313

KEYWORD

nonn

AUTHOR

Jorge Coveiro, Dec 22 2004

STATUS

approved

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Last modified January 18 19:32 EST 2020. Contains 331029 sequences. (Running on oeis4.)