%I A024277
%S A024277 0,1,6,176,8176,691456,86186496,15358324736,3667315849216,
%T A024277 1135407181398016,441731548179726336,211079248633366839296,
%U A024277 121507103129359646457856,82940335057202543199256576
%V A024277 0,1,-6,176,-8176,691456,-86186496,15358324736,-3667315849216,
%W A024277 1135407181398016,-441731548179726336,211079248633366839296,
%X A024277 -121507103129359646457856,82940335057202543199256576
%N A024277 Expansion of ln(1+tanh(x)*tan(x))/2.
%t A024277 Log[ 1+Tanh[ x ]*Tan[ x ]]/2 (* Even Part *)
%Y A024277 A009398.
%Y A024277 Cf. A101921.
%Y A024277 Sequence in context: A055165 A071095 A134632 this_sequence A012177 A012227 
               A012152
%Y A024277 Adjacent sequences: A024274 A024275 A024276 this_sequence A024278 A024279 
               A024280
%K A024277 sign
%O A024277 0,3
%A A024277 R. H. Hardin (rhhardin(AT)att.net)
%E A024277 Extended with signs 03/97.