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A055289 Column 1 of triangle A055288. 0
1, -1, 1, 0, -3, 5, 9, -44, -50, 545, 572, -9890, -13263, 251236, 490208, -8309897, -25084529, 340735734, 1618199204, -16683530000, -123071639020, 922641297931, 10768715419165, -53177799474462, -1066100082041498 (list; graph; refs; listen; history; internal format)
OFFSET

1,5

LINKS

Index entries for sequences related to rooted trees

CROSSREFS

Sequence in context: A027715 A082703 A125708 * A124974 A163550 A123220

Adjacent sequences:  A055286 A055287 A055288 * A055290 A055291 A055292

KEYWORD

sign

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), May 09 2000

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.