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A025138
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a(n) = (1/2)*(3rd elementary symmetric function of C(n,0), C(n,1), ..., C(n,[ n/2 ])).
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0
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12, 25, 1155, 3136, 89012, 282339, 6356460, 22384516, 437787537, 1663878008, 29545748596, 119083774720, 1968978205492, 8317456369783
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OFFSET
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4,1
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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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STATUS
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approved
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