id:A009806 - OEIS Search Results

Search: id:A009806

Displaying 1-1 of 1 results found.

page 1

Expansion of tanh(tan(ln(1+x))).

+0
1

0, 1, -1, 2, -6, 16, 0, -792, 13776, -200552, 2855880, -41436352, 620388912, -9606956592, 153409074000, -2508503487232, 41503122145920, -680444083117184, 10600133081473152, -140189781816392448, 819083424632851200 (list; graph; listen)

	OFFSET	`0,4`
	MATHEMATICA	`Tanh[ Tan[ Log[ 1+x ] ] ]`
	CROSSREFS	`Sequence in context: A009711 A009586 A009487 this_sequence A036046 A080622 A082374` `Adjacent sequences: A009803 A009804 A009805 this_sequence A009807 A009808 A009809`
	KEYWORD	`sign,easy`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended with signs Mar 15 1997 by Olivier Gerard.`

page 1

Search completed in 0.002 seconds

Last modified December 3 01:16 EST 2008. Contains 151161 sequences.

AT&T Labs Research