a(n) = Sum_{d|n} tau(d)^n, where tau(n) is the number of divisors of n.
A344080
a(n) = Sum_{d|n} tau(d)^n, where tau(n) is the number of divisors of n.
Terms
- a(0) =1a(1) =5a(2) =9a(3) =98a(4) =33a(5) =4225a(6) =129a(7) =72354a(8) =20196a(9) =1050625a(10) =2049a(11) =2194099186a(12) =8193a(13) =268468225a(14) =1073807361a(15) =156925970179a(16) =131073a(18) =524289a(22) =8388609a(24) =847322163876
External references
- oeis: A344080