A202379 - OEIS

%I #7 Mar 30 2012 16:52:08

%S 1,2,8,8,960,288,1152,17280,5806080,89600,87091200,17418240,

%T 213497856000,402361344000,62768369664000,295206912,

%U 102437979291648000,342372925440000,256094948229120000,5377993912811520000,61309130606051328000000,89903156428800000,12450469599998115840000,73570956727261593600000

%N Denominators of coefficients in Taylor series expansion of log(cosec(x)*log(x+1)).

%e -1/2*x+3/8*x^2-1/8*x^3+89/960*x^4-19/288*x^5+61/1152*x^6-751/17280*x^7+214157/5806080*x^8-

%e 2857/89600*x^9+2440391/87091200*x^10 +...

%p t1:=log(csc(x)*log(x+1));

%p t2:=series(t1,x,30);

%p t3:=seriestolist(t2);

%p t4:=map(numer,t3); t5:=map(denom,t3); lprint(t2);

%Y Cf. A012854.

%K nonn,frac

%O 0,2

%A _N. J. A. Sloane_, Dec 18 2011