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 A013371 Expansion of tan(sinh(x)-sin(x)) = 2/3!*x^3 + 2/7!*x^7 + 4480/9!*x^9 + 2/11!*x^11 + ... 0
 0, 2, 0, 2, 4480, 2, 274560, 717516802, 20650240, 397299302402, 1260764869707520, 211694311628802, 3189730834295158400, 12098583209553471488002, 6723227372694939050880 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Table of n, a(n) for n=0..14. MATHEMATICA nn = 20; Table[(CoefficientList[Series[-Tan[Sin[x] - Sinh[x]], {x, 0, 2*nn+1}], x] * Range[0, 2*nn+1]!)[[n]], {n, 2, 2*nn, 2}] (* Vaclav Kotesovec, Feb 06 2015 *) CROSSREFS Sequence in context: A012622 A013370 A013374 * A013372 A209640 A080300 Adjacent sequences: A013368 A013369 A013370 * A013372 A013373 A013374 KEYWORD nonn AUTHOR Patrick Demichel (patrick.demichel(AT)hp.com) EXTENSIONS a(0)=0 prepended by Vaclav Kotesovec, Feb 06 2015 Definition modified by Vaclav Kotesovec, Feb 06 2015 STATUS approved

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Last modified August 10 21:39 EDT 2024. Contains 375058 sequences. (Running on oeis4.)