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Search: id:A161522
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A161522 prime(n)*( prime(n)-n ). +0
1
2, 3, 10, 21, 66, 91, 170, 209, 322, 551, 620, 925, 1148, 1247, 1504, 1961, 2478, 2623, 3216, 3621, 3796, 4503, 4980, 5785, 6984, 7575, 7828, 8453, 8720, 9379, 12192, 12969, 14248, 14595, 16986, 17365, 18840, 20375, 21376, 23009, 24702, 25159, 28268, 28757 (list; graph; listen)
OFFSET

1,1

FORMULA

a(n) = A000040(n)*A014689(n) = A001248(n)-A033286(n).

CROSSREFS

Cf. A000040, A014689.

Sequence in context: A069565 A139694 A064497 this_sequence A120484 A113202 A079078

Adjacent sequences: A161519 A161520 A161521 this_sequence A161523 A161524 A161525

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jun 12 2009

EXTENSIONS

Entries checked by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 23 2009

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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