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A202059
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Number of ascent sequences avoiding the pattern 100.
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5
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1, 1, 2, 5, 14, 44, 153, 583, 2410, 10721, 50965, 257393, 1374187, 7722862, 45520064, 280502924, 1802060232, 12040040899, 83475921469, 599400745354, 4449689901306, 34096169966924, 269286884243138, 2189193150557825, 18297258191472880, 157049750065028868
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OFFSET
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0,3
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COMMENTS
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It appears that no formula or g.f. is known.
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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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Corrected a(7), was 383, but should be 583 according to Duncan-Steimgrimsson paper and independent computation. - Andrew Baxter, Jan 06 2014
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STATUS
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approved
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