G.f.: exp( Sum_{n>=1} A132303(n)*x^n/n ), where A132303(n) = sum of the cubes of the trinomial coefficients in row n of triangle A027907.
A168593
G.f.: exp( Sum_{n>=1} A132303(n)*x^n/n ), where A132303(n) = sum of the cubes of the trinomial coefficients in row n of triangle A027907.
Terms
- a(0) =1a(1) =3a(2) =27a(3) =349a(4) =5484a(5) =96408a(6) =1824758a(7) =36393090a(8) =754696998a(9) =16130052394a(10) =353134333470
External references
- oeis: A168593