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A053130 Binomial coefficients C(2n-7,8). 5
9, 165, 1287, 6435, 24310, 75582, 203490, 490314, 1081575, 2220075, 4292145, 7888725, 13884156, 23535820, 38608020, 61523748, 95548245, 145008513, 215553195, 314457495, 450978066, 636763050, 886322710, 1217566350 (list; graph; refs; listen; history; internal format)
OFFSET

8,1

COMMENTS

a(n)= A053123(n,8), n >= 8; a(n) := 0, n=0..7,(ninth column of shifted Chebyshev's S-triangle, decreasing order)

REFERENCES

M. Abramowitz and I. A. Stegun, eds., Handbook of Mathematical Functions, National Bureau of Standards Applied Math. Series 55, 1964 (and various reprintings).

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 8..200

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].

Index entries for sequences related to Chebyshev polynomials.

FORMULA

a(n)= binomial(2*n-7, 8) if n >= 8 else 0; G.f.: (9+84*x+126*x^2+36*x^3+x^4)/(1-x)^9.

PROG

(MAGMA) [Binomial(2*n-7, 8): n in [8..250]]; // Vincenzo Librandi, Apr 07 2011

CROSSREFS

Cf. A053123, A053129.

Sequence in context: A041147 A041144 A086759 * A166180 A004107 A180831

Adjacent sequences:  A053127 A053128 A053129 * A053131 A053132 A053133

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)

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Last modified February 18 00:14 EST 2012. Contains 206085 sequences.