A004327 Binomial coefficient C(3n,n-9).

1, 30, 528, 7140, 82251, 850668, 8145060, 73629072, 636763050, 5317936260, 43183019880, 342700125300, 2668424446233, 20448884000160, 154603005527328, 1155454041309504, 8550047575185300, 62724534168736440

Offset

9,2

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.

Links

Seiichi Manyama, Table of n, a(n) for n = 9..1000

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].

Mathematica

Table[Binomial[3n, n-9], {n, 9, 30}] (* Harvey P. Dale, May 29 2019 *)

Crossrefs

Sequence in context: A229563 A022754 A050982 * A270499 A286975 A139626

Adjacent sequences: A004324 A004325 A004326 * A004328 A004329 A004330

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved