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Search: id:A074271
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| A074271 |
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Previous term + prime(previous term). |
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+0
2
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| 1, 3, 8, 27, 130, 863, 7554, 84385, 1165814, 19408513, 381328184, 8690396907, 226500350374, 6671888768963
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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a(1)=1; a(n)=a(n-1)+prime(a(n-1)).
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EXAMPLE
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a(4)=27 because a(3)=8, prime(8)=19 and 8+19=27.
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MATHEMATICA
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se={1}; a=1; Do[b=a+Prime[a]; se=Append[se, b]; a=b, {i, 13}]; se
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CROSSREFS
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Sequence in context: A110886 A104854 A030495 this_sequence A005641 A148845 A148846
Adjacent sequences: A074268 A074269 A074270 this_sequence A074272 A074273 A074274
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KEYWORD
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more,nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Sep 21 2002
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