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 A279243 Denominators of coefficients in expansion of (sin x)/(1 + cos(sqrt(x))). 2
 1, 2, 8, 16, 5760, 26880, 14515200, 958003200, 55794106368, 41845579776000, 25609494822912000, 4865804016353280000, 2997335274073620480000, 1240896803466478878720000, 537721948168807514112000000, 26512029966235987869696000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Clark Kimberling, Table of n, a(n) for n = 0..1000 EXAMPLE (0/1) + (1/2)x + (1/8)x^2 - (1/16)x^3 - (103/5760)x^3 + ... ; 1/2, 1/3, 1/8, -1/16, ... = A279242/A279243. MATHEMATICA z = 26; t = CoefficientList[Series[Sin[x]/(1 + Cos[Sqrt[x]]), {x, 0, z}], x]; Numerator[t]   (* A279242 *) Denominator[t] (* A279243 *) CROSSREFS Cf. A279242. Sequence in context: A308613 A006573 A009662 * A162218 A103086 A192155 Adjacent sequences:  A279240 A279241 A279242 * A279244 A279245 A279246 KEYWORD nonn,easy,frac AUTHOR Clark Kimberling, Dec 11 2016 STATUS approved

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Last modified June 6 13:31 EDT 2020. Contains 334827 sequences. (Running on oeis4.)