0,1

113 is in the sequence because f(2)=((prime(2)*prime(3))^2+1)/2=((3*5)^2+1)/2=113 is prime.

Cf. A086893, A087293.

Sequence in context: A109563 A142024 A077287 this_sequence A075030 A079098 A008362

Adjacent sequences: A087291 A087292 A087293 this_sequence A087295 A087296 A087297

nonn

Ray Chandler (rayjchandler(AT)sbcglobal.net), Aug 31 2003