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A056863 Related to triangle A056858 of number of rises in set partitions of n at a given index i. 6
1, -1, 1, -2, 1, 1, -3, 4, 2, 1, -4, 9, 10, 4, 1, -5, 16, 28, 24, 8, 1, -6, 25, 60, 80, 56, 16 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

REFERENCES

W. C. Yang, Conjectures on some sequences involving set partitions and Bell numbers, preprint, 2000. [Apparently unpublished. - R. J. Mathar, Oct 06 2011]

LINKS

Table of n, a(n) for n=1..27.

EXAMPLE

1,-1;

1,-2,1;

1,-3,4,2;

1,-4,9,10,4;

...

CROSSREFS

Cf. Bell numbers A000110.

Cf. A056857-A056862.

Sequence in context: A319844 A193736 A292975 * A120019 A145034 A286510

Adjacent sequences:  A056860 A056861 A056862 * A056864 A056865 A056866

KEYWORD

sign,tabf,more,obsc,uned

AUTHOR

Winston C. Yang (winston(AT)cs.wisc.edu), Aug 31 2000

STATUS

approved

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Last modified January 22 16:29 EST 2020. Contains 331152 sequences. (Running on oeis4.)