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A000363 Number of permutations of length n by number of runs.
(Formerly M4018 N1666)
+0
3
5, 61, 479, 3111, 18270, 101166, 540242, 2819266, 14494859, 73802835, 373398489, 1881341265 (list; graph; listen)
OFFSET

4,1

REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

F. N. David, M. G. Kendall and D. E. Barton, Symmetric Function and Allied Tables, Cambridge, 1966, p. 260.

CROSSREFS

Contribution from Johannes W. Meijer (meijgia(AT)hotmail.com), May 24 2009: (Start)

The a(n) sequence equals the third left hand column of A008971.

The a(2*n) sequence equals the third left hand column of A160486.

(End)

Sequence in context: A046976 A092838 A060060 this_sequence A099666 A064328 A012060

Adjacent sequences: A000360 A000361 A000362 this_sequence A000364 A000365 A000366

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.


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