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A037247 Reversion of g.f. (beginning with x term) for number of trees with n nodes. 2
1, -1, 1, -2, 5, -13, 35, -98, 282, -832, 2505, -7662, 23715, -74104, 233429, -740511, 2363816, -7587409, 24473880, -79289278, 257890856, -841789791, 2756618710, -9053837032, 29817032534, -98441372386, 325753459625, -1080250590778 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..27.

Index entries for reversions of series

Index entries for sequences related to trees

CROSSREFS

Cf. A000055, A007315.

Sequence in context: A059027 A025198 A221205 * A126221 A107086 A294790

Adjacent sequences:  A037244 A037245 A037246 * A037248 A037249 A037250

KEYWORD

sign

AUTHOR

N. J. A. Sloane.

EXTENSIONS

Signs corrected Dec 24 2001

STATUS

approved

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Last modified May 21 23:46 EDT 2019. Contains 323472 sequences. (Running on oeis4.)