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Numerators of coefficients in Taylor series for log(tan(x)/x).
1

%I #7 Mar 07 2020 01:52:14

%S 0,1,7,62,127,146,1414477,32764,16931177,11499383114,91546277357,

%T 13299018868,1982765468311237,88306001369044,130106068440304534,

%U 7400951287808330864888,16555640865486520478399,16179883156293315362

%N Numerators of coefficients in Taylor series for log(tan(x)/x).

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

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

%Y Cf. A047686.

%K nonn,easy,frac

%O 0,3

%A _N. J. A. Sloane_