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A004324
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Binomial coefficient C(3n,n-6).
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1
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1, 21, 276, 2925, 27405, 237336, 1947792, 15380937, 118030185, 886163135, 6540715896, 47626016970, 343006888770, 2448296039700, 17345898649800, 122131734269895, 855420636763836, 5964720367660956
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OFFSET
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6,2
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REFERENCES
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M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings), p. 828.
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LINKS
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M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards, Applied Math. Series 55, Tenth Printing, 1972 [alternative scanned copy].
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MATHEMATICA
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Table[Binomial[3n, n-6], {n, 6, 30}] (* Harvey P. Dale, Oct 20 2015 *)
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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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