A009128 - OEIS

This site is supported by donations to The OEIS Foundation.

A009128

Expansion of cosh(ln(1+x))*cos(x).

1, 0, 0, -3, 7, -30, 194, -1365, 10893, -98028, 980324, -10783575, 129402835, -1682236842, 23551315878, -353269738185, 5652315810841, -96089368784280, 1729608638117192, -32862564124226667, 657251282484533151 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`Cosh[ Log[ 1+x ] ]*Cos[ x ]`
	CROSSREFS	`Sequence in context: A132105 A019021 A110505 * A053648 A138862 A080173` `Adjacent sequences: A009125 A009126 A009127 * A009129 A009130 A009131`
	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 15 11:21 EST 2012. Contains 205777 sequences.