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A096671 Denominators of terms in series expansion of sin(tan(x)), odd powers only. 14
1, 6, 40, 1008, 3456, 39916800, 566092800, 100590336000, 355687428096000, 1431118828339200, 2688996956405760000, 8617338912961658880000, 224800145555521536000000, 10888869450418352160768000000, 8841761993739701954543616000000, 4500732706172918893117440000000, 280107019961673757919941754880000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..16.

EXAMPLE

x + (1/6)*x^3 - (1/40)*x^5 - (55/1008)*x^7 - (143/3456)*x^9 + ...

CROSSREFS

Cf. A096664, A096712, A096716, A045688, A045689.

Cf. A003706.

Sequence in context: A186196 A196478 A001367 * A196712 A086803 A136382

Adjacent sequences:  A096668 A096669 A096670 * A096672 A096673 A096674

KEYWORD

nonn,frac

AUTHOR

N. J. A. Sloane, Aug 15 2004

STATUS

approved

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Last modified June 1 19:32 EDT 2020. Contains 334762 sequences. (Running on oeis4.)