A009002 - OEIS

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A009002

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

1, 1, 1, 3, 5, 25, 61, 427, 1385, 12465, 50521, 555731, 2702765, 35135945, 199360981, 2990414715, 19391512145, 329655706465, 2404879675441, 45692713833379, 370371188237525, 7777794952988025, 69348874393137901, 1595024111042171723, 15514534163557086905 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	MATHEMATICA	`(1+x)/Cos[ x ]`
	CROSSREFS	`Sequence in context: A005761 A200948 * A119882 A074701 A140127 A154143` `Adjacent sequences: A008999 A009000 A009001 * A009003 A009004 A009005`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net)`
	EXTENSIONS	`Extended and formatted Mar 15 1997 by Olivier Gerard` `More terms from R. Stephan, Mar 08 2004`

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.