a(n) is the least k such that A049417(A049417(k)) = n*k, where A049417 is the infinitary sigma function, or 0 if no such k exists.
A318272
a(n) is the least k such that A049417(A049417(k)) = n*k, where A049417 is the infinitary sigma function, or 0 if no such k exists.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =15a(4) =24a(5) =60a(6) =1321920a(7) =17850a(8) =285600a(9) =763776
External references
- oeis: A318272