a(n) is the smallest prime p = prime(k) such that A300845(k) = prime(n), or 0 if no such k exists.

Terms

a(0) =3a(1) =2a(2) =79a(3) =5a(4) =19a(5) =71a(6) =211a(7) =47a(8) =307a(9) =181a(10) =479a(11) =83a(12) =1231a(13) =293a(14) =547a(15) =1021a(16) =499a(17) =683a(18) =251a(19) =643a(20) =863a(21) =2243a(22) =1009a(23) =1447a(24) =2213a(25) =3361a(26) =4691a(27) =2137a(28) =2657a(29) =2131