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floor[ T_(n+1)/T_(n) ] where T_n is n-th tangential or "Zag" number (see A000182).

+0
4

2, 8, 17, 29, 44, 63, 85, 110, 138, 170, 205, 243, 284, 329, 376, 427, 482, 539, 600, 664, 731, 802, 876, 953, 1033, 1116, 1203, 1293, 1386, 1483, 1583, 1685, 1792, 1901, 2014, 2130, 2249, 2371, 2497, 2626, 2758, 2893, 3032, 3174, 3319, 3467, 3619, 3774 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`Peters J. and Stein J. - Matematische Tafeln . Revised Russian Edition in 1968, Moscow, Table 9a.`
	FORMULA	`a(n)=[ T(n+1)/T(n) ] where T(n) is n-th coefficient in expansion of tan(x).`
	EXAMPLE	`E.g a(5)= [ T(6)/T(5 ]=[ 353792/7936 ]=[ 44.58 ]=floor(44.58)=44`
	CROSSREFS	`Cf. A000182.` `Sequence in context: A103086 A131362 A066564 this_sequence A061150 A073601 A051248` `Adjacent sequences: A034969 A034970 A034971 this_sequence A034973 A034974 A034975`
	KEYWORD	`nonn,easy`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu)`

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Last modified December 4 14:15 EST 2008. Contains 151279 sequences.

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