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A275295
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Number of set partitions of [2n] with symmetric block size list of length eight.
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2
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1, 70, 4005, 219521, 11954993, 653625597, 35989579051, 1997232863281, 111698425867139, 6292920483661649, 356957345427055439, 20375264103726231304, 1169732275950521805077, 67508137728429209948117, 3914904903283946200635048, 228039200549822180269793411
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OFFSET
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4,2
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LINKS
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FORMULA
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EXAMPLE
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a(4) = 1: 1|2|3|4|5|6|7|8.
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CROSSREFS
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Bisection of column k=8 of A275281.
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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