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A097555
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Number of positive words of length n in the monoid Br_8 of positive braids on 9 strands.
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1
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1, 8, 45, 205, 831, 3133, 11294, 39585, 136302, 464026, 1568151, 5273999, 17681042, 59149925, 197598856, 659479754, 2199585548, 7333198205, 24441067317, 81444567492, 271360676916, 904051477063, 3011711782025, 10032660556567, 33420042561972
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