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A066397 Reversion of (1 - sqrt(1 - 4*x)) / (2*x) (the o.g.f. for the Catalan numbers A000108) as if it were an e.g.f. 0
1, -2, 6, -20, 50, 168, -4732, 54024, -356670, -1558040, 106069172, -2197188864, 26605890220, 22266781600, -12120090377400, 402165029201744, -7732409047854318, 38209542402620232, 4126723132306766900, -211906442415502467360, 5955735723962955009156 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

N. J. A. Sloane, Transforms

Index entries for reversions of series

MAPLE

read transforms; t1 := (1 - sqrt(1 - 4*x)) / (2*x); t2 := series(t1, x, 50); t2 := seriestolist(%); REVEGF(%);

CROSSREFS

Sequence in context: A204422 A027558 A320910 * A060344 A045655 A303307

Adjacent sequences:  A066394 A066395 A066396 * A066398 A066399 A066400

KEYWORD

sign

AUTHOR

N. J. A. Sloane, Dec 24 2001

STATUS

approved

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Last modified August 20 19:51 EDT 2019. Contains 326155 sequences. (Running on oeis4.)