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A025136
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a(n) = 2nd elementary symmetric function of C(n,0), C(n,1), ..., C(n,[ n/2 ]).
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0
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2, 3, 34, 65, 551, 1190, 8842, 20613, 141457, 347930, 2260567, 5788458, 36110426, 95438348, 576758282, 1564082093, 9212023037, 25523422418, 147143150689, 415191345278, 2350493291126, 6737735340308, 37550466036439
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OFFSET
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2,1
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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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