%I A013554
%S A013554 2,0,126,25,51326,10929,399223,19660361,452803663896,100636857978,
%T A013554 5246019768064285,1177349661754531,165748040744729226,
%U A013554 27301091307299787326
%N A013554 -tan(cotan(x)-cotanh(x))=2*x+126/5!*x^5+25/7!*x^7+51326/9!*x^9...
%Y A013554 Sequence in context: A009270 A033838 A046065 this_sequence A003321 A012333 
               A012329
%Y A013554 Adjacent sequences: A013551 A013552 A013553 this_sequence A013555 A013556 
               A013557
%K A013554 nonn
%O A013554 0,1
%A A013554 Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)