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A074271
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Previous term + prime(previous term).
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10
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1, 3, 8, 27, 130, 863, 7554, 84385, 1165814, 19408513, 381328184, 8690396907, 226500350374, 6671888768963, 219904832427160, 8040978338951561, 323784549401655250, 14264968083112608087
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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FORMULA
| a(1)=1; a(n)=a(n-1)+prime(a(n-1)).
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EXAMPLE
| a(4)=27 because a(3)=8, prime(8)=19 and 8+19=27.
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MATHEMATICA
| se={1}; a=1; Do[b=a+Prime[a]; se=Append[se, b]; a=b, {i, 13}]; se
NestList[ Prime@# + # &, 1, 14] [From Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 17 2010]
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CROSSREFS
| Cf. A007097, A179274. [From Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 17 2010]
Sequence in context: A110886 A104854 A030495 * A005641 A148845 A148846
Adjacent sequences: A074268 A074269 A074270 * A074272 A074273 A074274
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KEYWORD
| nonn
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AUTHOR
| Zak Seidov (zakseidov(AT)yahoo.com), Sep 21 2002
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EXTENSIONS
| a(15) from Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 17 2010
a(16)-a(18) from Charles R Greathouse IV, Mar 15, 2011
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