a(n) is the first prime p such that the sum of 2*n consecutive primes starting at p is q*(q+1) where q is prime, or 0 if there is no such p.

A338989

a(n) is the first prime p such that the sum of 2*n consecutive primes starting at p is q*(q+1) where q is prime, or 0 if there is no such p.

Terms

    a(0) =5a(1) =71a(2) =3a(3) =977a(4) =37a(5) =7829a(6) =8681a(7) =283a(8) =14341a(9) =37181a(10) =31a(11) =8839a(12) =1181a(13) =60901a(14) =54727a(15) =2579a(16) =64901a(17) =1248019a(18) =43a(19) =141803a(20) =47a(21) =29881a(22) =991a(23) =5a(24) =881a(25) =1603919a(26) =31123a(27) =18679a(28) =174149a(29) =74149

External references