a(1)=1; thereafter, a(n+1) = Sum_{d divides n} (n!/(d!*(n/d)!))*2^d*a(n/d).
A295583
a(1)=1; thereafter, a(n+1) = Sum_{d divides n} (n!/(d!*(n/d)!))*2^d*a(n/d).
Terms
- a(0) =1a(1) =2a(2) =8a(3) =24a(4) =112a(5) =256a(6) =3456a(7) =7040a(8) =121856a(9) =889344a(10) =9521152a(11) =19044352a(12) =1485742080a(13) =2971492352a(14) =127715852288
External references
- oeis: A295583