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A145065
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a(n) = sum of primes <= n*10^9.
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2
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24739512092254535, 95673602693282040, 211169315361937456, 370412807102643725, 572840944428163514, 818062002011808625, 1105720106635140803, 1435543734762318281, 1807310307011831228
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Robert G. Wilson v (rgwv@rgwv.com), Table of n, a(n) for n = 1..25 .
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FORMULA
| a(n) = A179660(10*n). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 05 2010]
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EXAMPLE
| a(1) = 2 + 3 + 5 + ... + 999999937 = 24739512092254535
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MATHEMATICA
| k = 1; p = 2; s = 0; lst = {}; While[k < 10, While[p < 10^9*k, s = s + p; p = NextPrime@p]; k++; AppendTo[lst, s]; Print[{k - 1, s}]] - Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 23 2010
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PROG
| (Pari) A145065(n)=my(s=0); forprime(p=2, n*1e9, s+=p); s
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CROSSREFS
| Cf. A046731, A178221, A179649, A179660.
Sequence in context: A172655 A083216 A180703 * A080127 A003941 A003934
Adjacent sequences: A145062 A145063 A145064 * A145066 A145067 A145068
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KEYWORD
| nonn
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AUTHOR
| Jacques Tramu (jacques.tramu(AT)echolalie.com), Feb 20 2009
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EXTENSIONS
| Extended by Charles R Greathouse IV Jul 24 2009
Edited by N. J. A. Sloane, Jul 27 2010
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