Number of ordered n-tuples (x_1, x_2, x_3, ..., x_n) such that Sum_{k=1..n} k/x_k is an integer and x_k is an integer between 1 and n for 1 <= k <= n.
A349145
Number of ordered n-tuples (x_1, x_2, x_3, ..., x_n) such that Sum_{k=1..n} k/x_k is an integer and x_k is an integer between 1 and n for 1 <= k <= n.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =8a(4) =43a(5) =207a(6) =2391a(7) =15539a(8) =182078a(9) =2070189a(10) =35850460a(11) =338695058a(12) =10609401552a(13) =115445915555
External references
- oeis: A349145