G.f.: Sum_{n>=0} x^n / ( (1+x)^(n+1) * (1 - 5*(n+1)*x) ).
A245376
G.f.: Sum_{n>=0} x^n / ( (1+x)^(n+1) * (1 - 5*(n+1)*x) ).
Terms
- a(0) =1a(1) =5a(2) =30a(3) =200a(4) =1550a(5) =14000a(6) =144500a(7) =1662500a(8) =20952500a(9) =286437500a(10) =4221312500a(11) =66703437500
External references
- oeis: A245376