%I A009415
%S A009415 0,1,1,5,12,9,105,1413,8176,42801,442665,5165445,54556524,637139385,
%T A009415 8293744641,113478922053,1717525727040,28284932778977,475222905120177,
%U A009415 8340834063368709,159725733100784940,3244894614657423849
%V A009415 0,1,-1,5,-12,9,-105,1413,-8176,42801,-442665,5165445,-54556524,637139385,
%W A009415 -8293744641,113478922053,-1717525727040,28284932778977,-475222905120177,
%X A009415 8340834063368709,-159725733100784940,3244894614657423849
%N A009415 Expansion of ln(1+x)*cosh(tanh(x)).
%t A009415 Log[ 1+x ]*Cosh[ Tanh[ x ] ]
%Y A009415 Sequence in context: A070368 A066326 A015242 this_sequence A076537 A110134 
               A014156
%Y A009415 Adjacent sequences: A009412 A009413 A009414 this_sequence A009416 A009417 
               A009418
%K A009415 sign,easy
%O A009415 0,4
%A A009415 R. H. Hardin (rhhardin(AT)att.net)
%E A009415 Extended with signs Mar 15 1997 by Olivier Gerard.