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1, 4, 329, 164410, 217010257, 592437912176, 2900576017215049, 23146596617368286854, 281092269321320392419425, 4933169326589172885999647452, 120172004795712251502939402381001, 3933950748992436265200224114943085394, 168530450086835969601177601081838249796529
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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LINKS
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PROG
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b(n)={sum(k=0, n, binomial(n, k)*k!)}
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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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