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Search: id:A000507
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A000507 Number of permutations of length n by number of runs.
(Formerly M5323 N2314)
+0
1
61, 1385, 19028, 206276, 1949762, 16889786, 137963364, 1081702420, 8236142455, 61386982075 (list; graph; listen)
OFFSET

6,1

REFERENCES

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

CROSSREFS

Sequence in context: A138790 A057534 A060061 this_sequence A017777 A113054 A017724

Adjacent sequences: A000504 A000505 A000506 this_sequence A000508 A000509 A000510

KEYWORD

nonn

AUTHOR

njas

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.


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