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A276725
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Number of set partitions of [n] such that for each block b the smallest integer interval containing b has at most nine elements.
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6
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1, 1, 2, 5, 15, 52, 203, 877, 4140, 21147, 94828, 389946, 1527058, 5846917, 22257299, 85116719, 329147169, 1292371138, 5165744159, 20781403539, 83617668276, 335483033770, 1340729704086, 5338181115652, 21193583922048, 84001778063348, 332811761809618
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OFFSET
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0,3
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LINKS
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Alois P. Heinz, Table of n, a(n) for n = 0..512
Pierpaolo Natalini, Paolo Emilio Ricci, New Bell-Sheffer Polynomial Sets, Axioms 2018, 7(4), 71.
Wikipedia, Partition of a set
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CROSSREFS
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Column k=9 of A276719.
Cf. A276843, A276899.
Sequence in context: A192865 A229225 A343669 * A287587 A287280 A287258
Adjacent sequences: A276722 A276723 A276724 * A276726 A276727 A276728
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KEYWORD
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nonn
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AUTHOR
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Alois P. Heinz, Sep 16 2016
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STATUS
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approved
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