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A001253 Number of permutations of length n by length of runs.
(Formerly M2123 N0840)
0
2, 20, 198, 2048, 22468, 264538, 3340962, 45173518, 652197968, 10024549190 (list; graph; refs; listen; history; internal format)
OFFSET

5,1

REFERENCES

F. N. David, M. G. Kendall and D. E. Barton, Symmetric Function and Allied Tables, Cambridge, 1966, p. 262.

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

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

CROSSREFS

Sequence in context: A125857 A171076 A001078 * A085586 A136902 A136884

Adjacent sequences:  A001250 A001251 A001252 * A001254 A001255 A001256

KEYWORD

nonn

AUTHOR

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

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Last modified February 17 19:13 EST 2012. Contains 206085 sequences.