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A135505
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a(0) = 1; a(n) = [product_(i = 1..n) p(i)^i] - 1, where p(i) is i-th prime.
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0
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OFFSET
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0,3
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LINKS
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Table of n, a(n) for n=0..5.
C. K. Caldwell and Y. Gallot, On the primality of n!-1 and 2*3*..*p -1, Math. Comp., Volume 71, Number 237, Pages 441-448.
Leo Corry, Number crunching vs. number theory: computers and FLT, from Kummer to SWAC (1850-1960) and beyond
Roland Queme, Some applications of Kummer and Stickelberger relations, arXiv:math/0601136.
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FORMULA
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a(n) = A076954(n)-1, n>0. [From R. J. Mathar, Nov 01 2009]
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CROSSREFS
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Cf. A057588, A002110, A057705.
Sequence in context: A088465 A001905 A221322 * A171704 A198288 A092814
Adjacent sequences: A135502 A135503 A135504 * A135506 A135507 A135508
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KEYWORD
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easy,nonn
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AUTHOR
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Ctibor O. Zizka, Feb 19 2008
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EXTENSIONS
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Converted references to links - R. J. Mathar, Oct 30 2009
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STATUS
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approved
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