OFFSET
3,5
REFERENCES
Wayne M. Dymacek, Isaac Lambert and Kyle Parsons, Arithmetic Progressions in Permutations, http://math.ku.edu/~ilambert/CN.pdf, 2012.
EXAMPLE
Triangle begins:
1, 0, 0, 1;
5, 0, 0, 0, 1;
18, 5, 0, 0, 0, 1;
95, 18, 6, 0, 0, 0, 1;
600, 84, 28, 7, 0, 0, 0, 1;
4307, 568, 116, 40, 8, 0, 0, 0, 1;
35168, 4122, 810, 156, 54, 9, 0, 0, 0, 1;
321609, 33910, 5975, 1100, 205, 70, 10, 0, 0, 0, 1;
...
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
N. J. A. Sloane, Sep 15 2012
STATUS
approved