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A098774 Least k such that (k*Mersenne-prime(n))^2 + 1 is prime. +0
1
2, 2, 4, 12, 80, 34, 8, 12, 94, 96, 668, 198, 1170, 38, 700, 2402, 394, 7154, 4040, 1740, 4644, 8976, 12300 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A002840 A007181 A100238 this_sequence A009264 A048157 A130797

Adjacent sequences: A098771 A098772 A098773 this_sequence A098775 A098776 A098777

KEYWORD

more,nonn

AUTHOR

Pierre CAMI (pierrecami(AT)tele2.fr), Oct 03 2004

EXTENSIONS

More terms from Ray G. Opao (1260(AT)email.com), Dec 23 2004

12300 from Ryan Propper (rpropper(AT)cs.stanford.edu), Jan 02 2008

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Last modified March 20 01:21 EDT 2010. Contains 173643 sequences.


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