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A098774 Least k such that (k*Mersenne-prime(n))^2 + 1 is prime. 0

%I #6 Sep 24 2013 09:21:35

%S 2,2,4,12,80,34,8,12,94,96,668,198,1170,38,700,2402,394,7154,4040,

%T 1740,4644,8976,12300

%N Least k such that (k*Mersenne-prime(n))^2 + 1 is prime.

%K more,nonn

%O 1,1

%A _Pierre CAMI_, Oct 03 2004

%E More terms from _Ray G. Opao_, Dec 23 2004

%E 12300 from _Ryan Propper_, Jan 02 2008

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Last modified April 20 12:25 EDT 2024. Contains 371844 sequences. (Running on oeis4.)