A034846 a(n) = P(n,6) = 1+6*K(n,6)=1+6*A034783(n). P(n,6) are special primes of 6k+1. The relevant values of k are given by A034783.

103, 283, 331, 367, 463, 547, 607, 619, 643, 709, 727, 739, 823, 859, 883, 907, 967, 1021, 1087, 1123, 1171, 1249, 1303, 1423, 1447, 1483, 1489, 1543, 1579, 1597, 1627, 1699, 1723, 1747, 1783