Index k of A007814(A000127(k)) at record terms.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =10a(6) =1034a(7) =1619a(8) =19940a(9) =151012a(10) =185354a(11) =937444a(12) =17714660a(13) =30594058a(14) =53467077a(15) =401540691a(16) =1127208901a(17) =34761279059