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A246013
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Number of permutations of [n] with every alternating run of length less than 3 in which the last alternating run has length 1.
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1
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0, 1, 1, 3, 9, 34, 159, 853, 5249, 36369, 279711, 2367212, 21854625, 218570717, 2354163631, 27167018427, 334407123969, 4373595961678, 60565476185919, 885304614118777, 13621870369734689, 220074660203753961, 3724832321188825551, 65909583942401516528
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OFFSET
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0,4
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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