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 A138334 C(n+11, 11)*(n+6)*(-1)^(n+1)*512/3. 0
 -1024, 14336, -106496, 559104, -2329600, 8200192, -25346048, 70606848, -180590592, 429977600, -963149824, 2046693376, -4153583616, 8094162944, -15214592000, 27690557440, -48952949760, 84293314560, -141710499840, 233076480000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Seventh column of the triangle defined in A123588, thirteenth column of the triangle defined in A123583. LINKS FORMULA a(n) = coefficient of x^12 in the polynomial 1 - T_(n+6)(x)^2, where T_n(x) is the n-th Chebyshev polynomial of the first kind. G.f.: 1024*(x-1)/(x+1)^13. MATHEMATICA Table[Binomial[n+11, 11](n+6)(-1)^(n+1) 512/3, {n, 0, 20}] (* Harvey P. Dale, Jun 03 2021 *) PROG (MAGMA) [ Binomial(n+11, 11)*(n+6)*(-1)^(n+1)*512/3: n in [0..19] ]; (MAGMA) k:=6; [ Coefficients(1-ChebyshevT(n+k)^2)[2*k+1]: n in [0..19] ]; (PARI) for(n=0, 19, print1(polcoeff(taylor(1024*(x-1)/(x+1)^13, x), n), ", ")); CROSSREFS Cf. A007318 (Pascal's triangle), A123588, A123583. Sequence in context: A197909 A218526 A221488 * A268124 A205611 A016781 Adjacent sequences:  A138331 A138332 A138333 * A138335 A138336 A138337 KEYWORD sign AUTHOR Klaus Brockhaus, Mar 15 2008 STATUS approved

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Last modified May 22 06:54 EDT 2022. Contains 353933 sequences. (Running on oeis4.)