A056863 Related to triangle A056858 of number of rises in set partitions of n at a given index i.

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

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 [Apparently unpublished.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