Primes in A105720.

Terms

a(0) =5a(1) =67a(2) =1523a(3) =1987a(4) =3119a(5) =9323a(6) =11783a(7) =14551a(8) =21019a(9) =42929a(10) =108191a(11) =177337a(12) =194527a(13) =225227a(14) =244753a(15) =251417a(16) =265123a(17) =301123a(18) =308569a(19) =450503a(20) =507523a(21) =622067a(22) =655351a(23) =772789a(24) =835249a(25) =860891a(26) =900241a(27) =940403a(28) =995611a(29) =1141241