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A216721
Second column of A216719.
1
2, 10, 55, 356, 2723, 23300, 220997, 2308564
OFFSET
5,1
REFERENCES
Wayne M. Dymacek, Isaac Lambert and Kyle Parsons, Arithmetic Progressions in Permutations, http://math.ku.edu/~ilambert/CN.pdf, 2012.
CROSSREFS
Sequence in context: A268556 A371816 A175935 * A122826 A320129 A329871
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 15 2012
STATUS
approved