a(n) = Sum_{k=0..n} k! * Sum_{d|n} phi(d) * A008284(n/d, k).
A327025
a(n) = Sum_{k=0..n} k! * Sum_{d|n} phi(d) * A008284(n/d, k).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =40a(5) =165a(6) =930a(7) =6109a(8) =47364a(9) =416259a(10) =4092332a(11) =44424105a(12) =527512456a(13) =6798907261a(14) =94504292830
External references
- oeis: A327025