Expansion of E.g.f.: 1/sqrt(1-2*x-3*x^2).
A098461
Expansion of E.g.f.: 1/sqrt(1-2*x-3*x^2).
Terms
- a(0) =1a(1) =1a(2) =6a(3) =42a(4) =456a(5) =6120a(6) =101520a(7) =1980720a(8) =44634240a(9) =1139080320a(10) =32488646400
External references
- oeis: A098461