Third column of triangle A286724: Lah[2,1](n+2, 2), n >= 0.
A286725
Third column of triangle A286724: Lah[2,1](n+2, 2), n >= 0.
Terms
- a(0) =1a(1) =18a(2) =288a(3) =4800a(4) =86400a(5) =1693440a(6) =36126720a(7) =836075520a(8) =20901888000a(9) =562028544000
External references
- oeis: A286725