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A246013
Number of permutations of [n] with every alternating run of length less than 3 in which the last alternating run has length 1.
1
0, 1, 1, 3, 9, 34, 159, 853, 5249, 36369, 279711, 2367212, 21854625, 218570717, 2354163631, 27167018427, 334407123969, 4373595961678, 60565476185919, 885304614118777, 13621870369734689, 220074660203753961, 3724832321188825551, 65909583942401516528
OFFSET
0,4
LINKS
Ira M. Gessel, Yan Zhuang, Counting permutations by alternating descents, 2014. See c(n).
CROSSREFS
Sequence in context: A191412 A371542 A349017 * A219663 A084756 A009578
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Aug 11 2014
EXTENSIONS
More terms from Alois P. Heinz, Oct 28 2014
STATUS
approved