G.f.: A(x) = exp( Sum_{n>=1} A069865(n)*x^n/n ) where A069865(n) = Sum_{k=0..n} C(n,k)^6.
A218119
G.f.: A(x) = exp( Sum_{n>=1} A069865(n)*x^n/n ) where A069865(n) = Sum_{k=0..n} C(n,k)^6.
Terms
- a(0) =1a(1) =2a(2) =35a(3) =554a(4) =15297a(5) =451842a(6) =15929824a(7) =601077640a(8) =24488754772
External references
- oeis: A218119