a(n) is the smallest k such that A350877(k) = prime(n), or -1 if prime(n) does not appear in A350877.

A350621

a(n) is the smallest k such that A350877(k) = prime(n), or -1 if prime(n) does not appear in A350877.

Terms

    a(0) =7a(1) =2a(2) =71a(3) =25a(4) =30a(5) =345a(6) =161a(7) =148a(8) =51a(9) =34a(10) =48a(11) =63a(12) =234a(13) =40a(14) =126a(15) =73a(16) =135a(17) =192a(18) =454a(19) =97a(20) =78a(21) =24841a(22) =433a(23) =85a(25) =322a(26) =102a(27) =106544217a(28) =207a(29) =556

External references