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A085871 a(1) = 2, a(2n) = smallest prime of the form k*a(2n-1) +1, k >1, a(2n+1) = smallest prime of the form r*a(2n)-1, r >1. 1

%I #4 Dec 05 2013 19:56:18

%S 2,5,19,191,4201,67217,403301,4839613,38716903,464602837,27876170219,

%T 55752340439,4014168511607,24085011069643,578040265671431,

%U 18497288501485793,73989154005943171,2663609544213954157

%N a(1) = 2, a(2n) = smallest prime of the form k*a(2n-1) +1, k >1, a(2n+1) = smallest prime of the form r*a(2n)-1, r >1.

%Y Cf. A085872.

%K nonn

%O 1,1

%A _Amarnath Murthy_, Jul 07 2003

%E More terms from _Ray Chandler_, Jul 08 2003

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Last modified March 28 17:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)