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A009363 Expansion of log(1+tan(log(1+x))). 0

%I #20 Jun 22 2015 22:21:19

%S 0,1,-2,9,-55,434,-4180,47590,-625770,9339880,-156097760,2889491800,

%T -58706203400,1299203207600,-31115627649600,801958361812400,

%U -22134642846706000,651438145653776000,-20365743882600064000

%N Expansion of log(1+tan(log(1+x))).

%F a(n) ~ (n-1)! * (-1)^(n+1) / (1-exp(-Pi/4))^n. - _Vaclav Kotesovec_, Jan 23 2015

%t With[{nn=20},CoefficientList[Series[Log[1+Tan[Log[1+x]]],{x,0,nn}], x]Range[0,nn]!] (* _Harvey P. Dale_, Sep 28 2011 *)

%K sign,easy

%O 0,3

%A _R. H. Hardin_

%E Extended with signs by _Olivier GĂ©rard_, Mar 15 1997

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Last modified March 28 05:02 EDT 2024. Contains 371235 sequences. (Running on oeis4.)