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A147634
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Number of permutations of 1..n with each sum of three adjacent terms unique.
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0
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1, 2, 6, 16, 54, 232, 936, 4136, 19112, 98666, 559598, 3448160, 22951024, 164020894, 1255124388, 10182613618, 87879918338
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OFFSET
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1,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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