a(n) is the least number k such that A377384(k) = n, or -1 if no such number exists.
A377387
a(n) is the least number k such that A377384(k) = n, or -1 if no such number exists.
Terms
- a(0) =1a(1) =3a(2) =8a(3) =27a(4) =135a(5) =1215a(6) =15795a(7) =328050a(8) =4920750a(9) =127764000a(10) =5826168000a(11) =126097171200
External references
- oeis: A377387