id:A009173 - OEIS Search Results

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Expansion of cosh(tanh(x)*tan(x)).

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1, 12, 7952, 31111872, 414147567872, 13936708915940352, 987956358173680013312, 130572314003924554412900352, 29485421729721202391180048924672, 10655360784935131422152244665663619072 (list; graph; listen)

	OFFSET	`0,2`
	MATHEMATICA	`Cosh[ Tanh[ x ]Tan[ x ] ] ( [ x^(4n) ] *)`
	CROSSREFS	`Sequence in context: A012607 A167072 A107251 this_sequence A012531 A013481 A013513` `Adjacent sequences: A009170 A009171 A009172 this_sequence A009174 A009175 A009176`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Reformated Mar 15 1997 by Olivier Gerard.`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

AT&T Labs Research