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A003009 a(n+1) = a(n) + 4^(n-1) a(n)^2.
(Formerly M3174)
+0
1
3, 147, 1383123, 489735485064147, 245597025618959718190041238775763, 247062114274836300381127305147102564467751924522387062291401805739987 (list; graph; listen)
OFFSET

3,1

REFERENCES

Hall, James S. A remark on the primeness of Mersenne numbers. J. London Math. Soc. 28, (1953). 285-287.

CROSSREFS

Sequence in context: A102965 A100931 A042135 this_sequence A037122 A118840 A111816

Adjacent sequences: A003006 A003007 A003008 this_sequence A003010 A003011 A003012

KEYWORD

nonn,easy

AUTHOR

njas

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.


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