Smallest k for which A385731(k) = n.

A386436

Smallest k for which A385731(k) = n.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =42a(4) =1770a(5) =47058a(6) =547470a(7) =8648458a(8) =623254170

External references