A055289 Column 1 of triangle A055288.

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

Offset

1,5

Links

Table of n, a(n) for n=1..25.

Index entries for sequences related to rooted trees

Crossrefs

Cf. A055288.

Sequence in context: A027715 A082703 A125708 * A124974 A336144 A215440

Adjacent sequences: A055286 A055287 A055288 * A055290 A055291 A055292

Keyword

sign

Author

Christian G. Bower, May 09 2000

Status

approved