A009431 - OEIS

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A009431

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

0, 1, -1, -1, 0, 49, -165, -393, -504, 70785, -434385, -517265, -12647976, 654552625, -6276987717, 18362076327, -636272644560, 22683808563841, -312594994151361, 2817355930176479, -72112751626318640, 2222078368780722865 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,6`
	MATHEMATICA	`Log[ 1+x ]/Cosh[ Sin[ x ] ]`
	CROSSREFS	`Sequence in context: A066551 A134210 A009409 * A074216 A016922 A147608` `Adjacent sequences: A009428 A009429 A009430 * A009432 A009433 A009434`
	KEYWORD	`sign,easy`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

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Last modified February 15 10:28 EST 2012. Contains 205763 sequences.