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A051033
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a(n) = binomial(n, floor(n/3)).
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7
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1, 1, 1, 3, 4, 5, 15, 21, 28, 84, 120, 165, 495, 715, 1001, 3003, 4368, 6188, 18564, 27132, 38760, 116280, 170544, 245157, 735471, 1081575, 1562275, 4686825, 6906900, 10015005, 30045015, 44352165, 64512240, 193536720, 286097760, 417225900, 1251677700
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OFFSET
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0,4
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LINKS
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MAPLE
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[seq(binomial(n, floor(n/3)), n=0..50)];
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MATHEMATICA
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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