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A047685 Numerators of coefficients in Taylor series for log(tan(x)/x). 1
0, 1, 7, 62, 127, 146, 1414477, 32764, 16931177, 11499383114, 91546277357, 13299018868, 1982765468311237, 88306001369044, 130106068440304534, 7400951287808330864888, 16555640865486520478399, 16179883156293315362 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

REFERENCES

CRC Standard Mathematical Tables and Formulae, 30th ed. 1996, p. 42.

LINKS

Table of n, a(n) for n=0..17.

EXAMPLE

(1/3)*x^2 + (7/90)*x^4 + (62/2835)*x^6 + (127/18900)*x^8 + (146/66825)*x^10 + ...

CROSSREFS

Cf. A047686.

Sequence in context: A317430 A145507 A254121 * A171078 A180776 A353099

Adjacent sequences:  A047682 A047683 A047684 * A047686 A047687 A047688

KEYWORD

nonn,easy,frac

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified May 24 12:01 EDT 2022. Contains 354033 sequences. (Running on oeis4.)