a(n) = n! * Sum_{k=1..n} ( Sum_{d|k} d^(k/d) )/k.
A356436
a(n) = n! * Sum_{k=1..n} ( Sum_{d|k} d^(k/d) )/k.
Terms
- a(0) =1a(1) =5a(2) =23a(3) =146a(4) =874a(5) =8124a(6) =62628a(7) =707664a(8) =7860816a(9) =103284000a(10) =1179669600a(11) =24454569600a(12) =324615427200
External references
- oeis: A356436