G.f.: 3F2([1/7, 2/7, 4/7], [1/2, 1], 2401 x).
A275052
G.f.: 3F2([1/7, 2/7, 4/7], [1/2, 1], 2401 x).
Terms
- a(0) =1a(1) =112a(2) =103488a(3) =139087872a(4) =219932697600
External references
- oeis: A275052
A275052
G.f.: 3F2([1/7, 2/7, 4/7], [1/2, 1], 2401 x).