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

A338990

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

Terms

    a(0) =19a(1) =61a(2) =17a(3) =8581a(4) =10883a(5) =151a(6) =2083a(7) =21859a(8) =11813a(9) =443a(10) =6779a(11) =1531a(12) =21559a(13) =37781a(14) =7529a(15) =757a(16) =29027a(17) =2591a(18) =12739a(19) =1637a(20) =491a(21) =4759a(22) =56269a(23) =341179a(24) =37441a(25) =81547a(26) =59a(27) =229a(28) =1814023a(29) =363523

External references