id:A009760 - OEIS Search Results

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

+0
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0, 1, 0, -1, 12, -34, 120, 146, -2352, 23848, -53280, -371768, 12223200, -107535440, 706340544, 2599870352, -95898673920, 1486560431744, -8308014488064, -67260673442176, 3505513923832320, -54539552924497664, 499029405102412800 (list; graph; listen)

	OFFSET	`0,5`
	MATHEMATICA	`Tan[ x ]/Cosh[ Log[ 1+x ] ]`
	CROSSREFS	`Sequence in context: A139635 A124705 A126366 this_sequence A078194 A034510 A083101` `Adjacent sequences: A009757 A009758 A009759 this_sequence A009761 A009762 A009763`
	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 December 17 23:40 EST 2009. Contains 171025 sequences.

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