a(0) = 1; a(n) = (n!)^3 * Sum_{k=0..n-1} a(k) / (k! * (n-k))^3.
A336259
a(0) = 1; a(n) = (n!)^3 * Sum_{k=0..n-1} a(k) / (k! * (n-k))^3.
Terms
- a(0) =1a(1) =1a(2) =9a(3) =278a(4) =20464a(5) =2948824a(6) =735078968a(7) =291153023664
External references
- oeis: A336259