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A004322
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Binomial coefficient C(3n,n-4).
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0
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1, 15, 153, 1330, 10626, 80730, 593775, 4272048, 30260340, 211915132, 1471442973, 10150595910, 69668534468, 476260169700, 3245372870670, 22057981462440, 149608375854525, 1012974972473835, 6848956078664700
(list; graph; refs; listen; history; internal format)
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OFFSET
| 4,2
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REFERENCES
| 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
| Milan Janjic, Two Enumerative Functions
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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CROSSREFS
| Sequence in context: A206361 A041424 A021124 * A125403 A010035 A017389
Adjacent sequences: A004319 A004320 A004321 * A004323 A004324 A004325
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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