A009342 - OEIS

This site is supported by donations to The OEIS Foundation.

A009342

Expansion of ln(1+sin(x)/cosh(x)).

0, 1, -1, -2, 10, -20, -16, 488, -4080, 22160, -7936, -1616672, 22996480, -172976960, -22368256, 25518205568, -485458114560, 4964227109120, -209865342976, -1231298393825792, 29816107240652800, -379260096755225600 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Log[ 1+Sin[ x ]/Cosh[ x ] ]`
	CROSSREFS	`Cf. A012816.` `Sequence in context: A085936 A030570 A039560 * A038103 A177150 A165551` `Adjacent sequences: A009339 A009340 A009341 * A009343 A009344 A009345`
	KEYWORD	`sign,easy`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

Content is available under The OEIS End-User License Agreement .

Last modified February 14 20:13 EST 2012. Contains 205663 sequences.