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Search: id:A061591
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| A061591 |
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a(n) = 2^x, where x = p*(p-1)/2 and p(n) = n-th prime. |
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+0
1
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| 2, 8, 1024, 2097152, 36028797018963968, 302231454903657293676544, 87112285931760246646623899502532662132736, 2993155353253689176481146537402947624255349848014848
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Harry J. Smith, Table of n, a(n) for n=1,...,22
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PROGRAM
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(PARI) { n=0; forprime (p=2, prime(22), write("b061591.txt", n++, " ", 2^(p*(p - 1)/2)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 25 2009]
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CROSSREFS
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Cf. A007955, A006308. The exponents x are in A008837.
Sequence in context: A120838 A004491 A132573 this_sequence A103085 A084148 A014115
Adjacent sequences: A061588 A061589 A061590 this_sequence A061592 A061593 A061594
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), May 22 2001
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EXTENSIONS
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OFFSET changed from 2,1 to 1,1 by Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 25 2009
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