A053550 Reversion of [1,2,12,152,3640,...] (A053549).

1, 2, -4, 72, -2168, 114864, -10671216, 1787642272, -557621854080, 332091938264960, -383877081387120640, 870132605833456937472, -3891989736269204588784384, 34485850497928703119235323904, -606809291874393995479640098992128

Offset

1,2

Links

Table of n, a(n) for n=1..15.

Index entries for reversions of series

Crossrefs

Sequence in context: A270583 A018373 A292414 * A018378 A023175 A276740

Adjacent sequences: A053547 A053548 A053549 * A053551 A053552 A053553

Keyword

sign

Author

N. J. A. Sloane, Jan 16 2000

Status

approved