Reversion of [1,2,12,152,3640,...] (A053549).

A053550

Reversion of [1,2,12,152,3640,...] (A053549).

Terms

    a(0) =1a(1) =2a(2) =-4a(3) =72a(4) =-2168a(5) =114864a(6) =-10671216a(7) =1787642272a(8) =-557621854080

External references