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A113936
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a(n) = k-th prime, where k = n-th Mersenne prime = A000668(n).
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0
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OFFSET
| 1,1
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FORMULA
| a(n) = A000040(A000668(n)). [From Omar E. Pol (info(AT)polprimos.com), Dec 09 2009]
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MATHEMATICA
| Prime[2^{2, 3, 5, 7, 13, 17, 19, 31} - 1] (* Robert G. Wilson v *)
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PROG
| (PARI) prime(2^13-1) prime(2^7-1) prime(2^5-1) prime(2^3-1) prime(2^2-1)
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CROSSREFS
| Cf. A000043, A000668.
Sequence in context: A012174 A012259 A202038 * A012263 A076448 A096310
Adjacent sequences: A113933 A113934 A113935 * A113937 A113938 A113939
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KEYWORD
| hard,nonn
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AUTHOR
| Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Jan 31 2006
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EXTENSIONS
| a(6)-a(8) from Robert G. Wilson v (rgwv(at)rgwv.com) and Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Jan 31 2006
A-number in definition corrected by Omar E. Pol (info(AT)polprimos.com), Dec 09 2009
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