Primes equal to a centered heptagonal number plus 1.

Terms

a(0) =2a(1) =23a(2) =107a(3) =149a(4) =317a(5) =1619a(6) =2459a(7) =3257a(8) =3929a(9) =5189a(10) =6029a(11) =6323a(12) =7247a(13) =15017a(14) =19427a(15) =21023a(16) =21569a(17) =26189a(18) =42737a(19) =45887a(20) =55127a(21) =56009a(22) =63317a(23) =66173a(24) =67139a(25) =70079a(26) =82469a(27) =101747a(28) =105359a(29) =110273