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A201160
Irregular triangle read by rows: number of Motzkin paths of length n and rank k.
0
1, 1, 1, 1, 1, 2, 1, 1, 1, 3, 3, 1, 1, 2, 3, 4, 6, 4, 1, 1, 1, 3, 5, 7, 8, 10, 10, 5, 1, 1, 2, 3, 6, 8, 12, 16, 18, 19, 20, 15, 6, 1
OFFSET
0,6
COMMENTS
This might be the row-reversed variant of A129181. - R. J. Mathar, Dec 13 2011
LINKS
Drake, Brian, Limits of areas under lattice paths, Discrete Math. 309 (2009), no. 12, 3936-3953. See Section 3.
EXAMPLE
Triangle begins
1
1
1 1
1 2 1
1 1 3 3 1
1 2 3 4 6 4 1
1 1 3 5 7 8 10 10 5 1
1 2 3 6 8 12 16 18 19 20 15 6 1
...
CROSSREFS
Sequence in context: A072906 A239062 A341052 * A302538 A228428 A344911
KEYWORD
nonn,tabf,more
AUTHOR
N. J. A. Sloane, Nov 27 2011
STATUS
approved