Expansion of g.f.: (1 - 5*x - sqrt(25*x^2 - 14*x + 1))/(2*x).
A082302
Expansion of g.f.: (1 - 5*x - sqrt(25*x^2 - 14*x + 1))/(2*x).
Terms
- a(0) =1a(1) =6a(2) =42a(3) =330a(4) =2814a(5) =25422a(6) =239442a(7) =2326434a(8) =23151030a(9) =234784662a(10) =2417832186a(11) =25216231866a(12) =265796560302
External references
- oeis: A082302