id:A009125 - OEIS Search Results

Search: id:A009125

Displaying 1-1 of 1 results found.

page 1

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

+0
2

1, 0, 1, -3, 20, -120, 976, -8568, 88640, -1011840, 12933376, -180964608, 2767631360, -45799004160, 816582578176, -15594628021248, 317710534983680, -6876762625966080, 157606194409701376, -3812723805066559488 (list; graph; listen)

	OFFSET	`0,4`
	MATHEMATICA	`Cosh[ Log[ 1+Tan[ x ] ] ]`
	CROSSREFS	`Sequence in context: A128910 A037788 A037669 this_sequence A037795 A167590 A138910` `Adjacent sequences: A009122 A009123 A009124 this_sequence A009126 A009127 A009128`
	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 November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research