Primes equal to a heptagonal number plus 1.

Terms

a(0) =2a(1) =19a(2) =113a(3) =149a(4) =541a(5) =617a(6) =971a(7) =1289a(8) =1783a(9) =2357a(10) =3011a(11) =3187a(12) =5689a(13) =6427a(14) =7481a(15) =7757a(16) =9829a(17) =12497a(18) =12853a(19) =14327a(20) =15881a(21) =17099a(22) =18793a(23) =21023a(24) =24851a(25) =28463a(26) =30637a(27) =31193a(28) =45361a(29) =50909