Product, for k <= n, of the squarefree parts of the total number of arrangements of a set with k elements.
A222638
Product, for k <= n, of the squarefree parts of the total number of arrangements of a set with k elements.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =10a(4) =650a(5) =211900a(6) =414688300a(7) =56812297100
External references
- oeis: A222638