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A118140 Order of index prime order of primes generated by Euler's prime generating polynomial A005846. +0
1
13, 14, 15, 16, 18, 20, 23, 25, 30, 32, 36, 40, 45, 48, 54, 60, 65, 69, 76, 82, 89, 96, 101, 108, 116, 125, 132, 139, 147, 156, 164, 174, 184, 192, 202, 212, 220, 229, 241, 252 (list; graph; listen)
OFFSET

0,1

FORMULA

a(n) = PrimePi[n^2+n+41]=PrimePi[A005846[n]]

MATHEMATICA

a = Table[PrimePi[n^2 + n + 41], {n, 0, 39}]

CROSSREFS

Cf. A005846.

Sequence in context: A020512 A132580 A138596 this_sequence A108854 A106007 A048037

Adjacent sequences: A118137 A118138 A118139 this_sequence A118141 A118142 A118143

KEYWORD

nonn,uned

AUTHOR

Roger L. Bagula (rlbagulatftn(AT)yahoo.com), May 11 2006

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.


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