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 A012770 -log(cosh(x)*cos(x))=-4/4!*x^4-544/8!*x^8-707584/12!*x^12... 0
 4, 544, 707584, 3807514624, 58177770225664, 2030847773013704704, 140503203207887919775744, 17427925514250338592341622784, 3597303386901777560143500698189824, 1166406649834620087886383283250988580864 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS MAPLE g := taylor(log(cosh(x)*cos(x)), x=0, 100):q := seq(abs(coeff(g, x, 4*i)*(4*i)!), i=1..15); MATHEMATICA With[{nn=40}, Take[-CoefficientList[Series[Log[Cosh[x]Cos[x]], {x, 0, nn}], x] Range[0, nn]!, {5, -1, 4}]] (* Harvey P. Dale, Mar 15 2015 *) CROSSREFS Sequence in context: A295206 A209608 A159367 * A332154 A202032 A267066 Adjacent sequences:  A012767 A012768 A012769 * A012771 A012772 A012773 KEYWORD nonn AUTHOR Patrick Demichel (patrick.demichel(AT)hp.com) EXTENSIONS More terms from Sascha Kurz and Vladeta Jovovic, Apr 04 2002 Definition corrected by Harvey P. Dale, Mar 15 2015 STATUS approved

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Last modified December 8 16:57 EST 2021. Contains 349596 sequences. (Running on oeis4.)