Indices of primes in A214830.

Terms

a(0) =3a(1) =7a(2) =11a(3) =20a(4) =28a(5) =63a(6) =72a(7) =79a(8) =688a(9) =795a(10) =999a(11) =2716a(12) =13220a(13) =15940a(14) =17903a(15) =26832a(16) =28416a(17) =33448a(18) =117923