a(n) is the least prime p such that the second forward difference of three consecutive primes p, q and r is n = -(p - 2q + r)/2.

A316792

a(n) is the least prime p such that the second forward difference of three consecutive primes p, q and r is n = -(p - 2q + r)/2.

Terms

    a(0) =3a(1) =7a(2) =23a(3) =1531a(4) =139a(5) =113a(6) =523a(7) =1069a(8) =887a(9) =6397a(10) =1129a(11) =3137a(12) =5351a(13) =2971a(14) =1327a(15) =14107a(16) =9973a(17) =19333a(18) =84871a(19) =16141a(20) =15683a(21) =73189a(22) =31907a(23) =28229a(24) =35617a(25) =35677a(26) =44293a(27) =43331a(28) =107377a(29) =34061

External references