id:A012881 - OEIS Search Results

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exp(sech(x)*arcsinh(x))=1+x+1/2!*x^2-3/3!*x^3-15/4!*x^4+5/5!*x^5...

+0
1

1, 1, 1, -3, -15, 5, 345, 889, -11263, -82167, 455025, 7869301, -16466703, -906141171, -746021367, 128450716913, 480286325633, -22562588189167, -150637957014303, 4955964959446253, 46203820378253425 (list; graph; listen)

	OFFSET	`0,4`
	CROSSREFS	`Sequence in context: A096682 A009215 A088558 this_sequence A066832 A102777 A102531` `Adjacent sequences: A012878 A012879 A012880 this_sequence A012882 A012883 A012884`
	KEYWORD	`sign`
	AUTHOR	`Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research