P_n(1)*Q_n(1) (see A155100 and A104035), defining Q_{-1} = 0.
A156143
P_n(1)*Q_n(1) (see A155100 and A104035), defining Q_{-1} = 0.
Terms
- a(0) =1a(1) =2a(2) =12a(3) =176a(4) =4560a(5) =184832a(6) =10786752a(7) =856856576a(8) =88901310720
External references
- oeis: A156143