id:A000828 - OEIS Search Results

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Expansion of cos x (cos x + sin x ) /cos 2x.

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1, 1, 2, 8, 40, 256, 1952, 17408, 177280, 2031616, 25866752, 362283008, 5535262720, 91620376576, 1633165156352, 31191159799808, 635421069967360, 13753735117275136, 315212388819402752, 7625476699018231808 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Expansion of 1/(1- tan x) - Emeric Deutsch (deutsch(AT)duke.poly.edu), Sep 10 2001`
	REFERENCES	`D. Dumont, Further triangles of Seidel-Arnold type and continued fractions related to Euler and Springer numbers, Adv. Appl. Math., 16 (1995), 275-296.`
	LINKS	`R. J. Mathar, Table of n, a(n) for n = 1..200`
	CROSSREFS	`Cf. A000825.` `Sequence in context: A116456 A055882 A002301 this_sequence A111394 A140363 A012597` `Adjacent sequences: A000825 A000826 A000827 this_sequence A000829 A000830 A000831`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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