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A025137
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a(n) = 3rd elementary symmetric function of C(n,0), C(n,1), ..., C(n,[ n/2 ]).
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0
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24, 50, 2310, 6272, 178024, 564678, 12712920, 44769032, 875575074, 3327756016, 59091497192, 238167549440, 3937956410984, 16634912739566, 260225795002884, 1142557688349320
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