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A053550 Reversion of [1,2,12,152,3640,...] (A053549). 0
1, 2, -4, 72, -2168, 114864, -10671216, 1787642272, -557621854080, 332091938264960, -383877081387120640, 870132605833456937472, -3891989736269204588784384, 34485850497928703119235323904, -606809291874393995479640098992128 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A270583 A018373 A292414 * A018378 A023175 A276740
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Jan 16 2000
STATUS
approved

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Last modified March 28 12:26 EDT 2024. Contains 371254 sequences. (Running on oeis4.)