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A244198 Number of ballot sequences of length n having largest descent 2. 2
1, 5, 21, 78, 292, 1028, 3691, 13004, 46452, 165098, 595386, 2148830, 7861261, 28880866, 107407411, 401862116, 1520528499, 5791624015, 22288596981, 86362655462, 337798945830, 1330195410257, 5283145735982, 21119637660235, 85089563602538, 344934335418331 (list; graph; refs; listen; history; text; internal format)
OFFSET
4,2
COMMENTS
Also number of ballot sequences of length n having largest ascent 2.
LINKS
CROSSREFS
Column k=2 of A238128 and of A238129.
Sequence in context: A055219 A108863 A027172 * A186244 A255447 A029870
KEYWORD
nonn
AUTHOR
Joerg Arndt and Alois P. Heinz, Jun 22 2014
STATUS
approved

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Last modified March 28 16:34 EDT 2024. Contains 371254 sequences. (Running on oeis4.)