Values of prime q corresponding to terms in A268594.

Terms

a(0) =3a(1) =13a(2) =59a(3) =239a(4) =3121a(5) =6857a(6) =29789a(7) =50651a(8) =65521a(9) =161047a(10) =262127a(11) =300761a(12) =1295027a(13) =3442949a(14) =9393929a(15) =13997519a(16) =21253931a(17) =49430861a(18) =84604517a(19) =95443991a(20) =237176657a(21) =329939369a(22) =384240581a(23) =487443401a(24) =633839777a(25) =893871733a(26) =904231061a(27) =1284365501a(28) =1605723209a(29) =3183010109