%I A013548
%S A013548 1,0,0,35,5,13684,1572,66226,1853110,40553751164,5789555879,
%T A013548 242818131784156,38257326112356,3934030213342971
%V A013548 1,0,0,-35,5,-13684,1572,-66226,1853110,-40553751164,5789555879,
%W A013548 -242818131784156,38257326112356,-3934030213342971
%N A013548 sech(cosec(x)-cotanh(x))=1-35/6!*x^6+5/8!*x^8-13684/10!*x^10...
%Y A013548 Sequence in context: A028847 A059023 A037934 this_sequence A034086 A051050 
               A012862
%Y A013548 Adjacent sequences: A013545 A013546 A013547 this_sequence A013549 A013550 
               A013551
%K A013548 sign
%O A013548 0,4
%A A013548 Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)