a(n) is the smallest number k such that A361929(k) = prime(n), or -1 if no such prime exists.

A361931

a(n) is the smallest number k such that A361929(k) = prime(n), or -1 if no such prime exists.

Terms

    a(0) =1a(1) =2a(2) =7a(3) =10a(4) =26a(5) =177a(6) =508a(7) =13812a(8) =73873a(9) =4638434a(10) =4638435a(11) =1874400183a(12) =114936835817

External references