id:A009007 - OEIS Search Results

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Expansion of 1/cos(ln(1+x)).

+0
1

1, 0, 1, -3, 16, -100, 760, -6720, 67940, -772560, 9760100, -135617900, 2055532400, -33748556400, 596675513200, -11302050942000, 228340292986000, -4901379615184000, 111394219174810000, -2672242230261006000 (list; graph; listen)

	OFFSET	`0,4`
	MATHEMATICA	`1/Cos[ Log[ 1+x ] ]`
	CROSSREFS	`Adjacent sequences: A009004 A009005 A009006 this_sequence A009008 A009009 A009010` `Sequence in context: A091641 A137572 A009151 this_sequence A000949 A091637 A074542`
	KEYWORD	`sign`
	AUTHOR	`R. H. Hardin (rhh(AT)cadence.com), Simon Plouffe (plouffe(AT)math.uqam.ca)`

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Last modified October 6 16:13 EDT 2008. Contains 144667 sequences.

AT&T Labs Research