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A025200
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s(n) = [ S3/S1 ], where S3 and S1 are, respectively, the 3rd and first elementary symmetric functions of {sqrt(k), k = 1,2,...,n} ].
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0
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0, 2, 5, 11, 18, 28, 42, 60, 82, 107, 140, 176, 218, 267, 324, 389, 455, 538, 622, 726, 830, 945, 1072, 1211, 1363, 1513, 1692, 1868, 2076, 2282, 2502, 2759, 3013, 3283, 3572, 3854
(list; graph; refs; listen; history; internal format)
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