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A012360 Expansion of e.g.f.: sech(tan(x)*log(x+1))=1-12/4!*x^4+60/5!*x^5-570/6!*x^6+3780/7!*x^7... 0

%I

%S 1,0,0,0,-12,60,-570,3780,-26880,145152,67800,-19702320,483806664,

%T -8808530016,143791860576,-2098017710880,26000312931840,

%U -200354333649536,-2365679417115840,173236427161446528

%N Expansion of e.g.f.: sech(tan(x)*log(x+1))=1-12/4!*x^4+60/5!*x^5-570/6!*x^6+3780/7!*x^7...

%t With[{nn=20},CoefficientList[Series[Sech[Tan[x]Log[x+1]],{x,0,nn}],x] Range[0,nn]!] (* _Harvey P. Dale_, Nov 29 2018 *)

%K sign

%O 0,5

%A Patrick Demichel (patrick.demichel(AT)hp.com)

%E Definition clarified by _Harvey P. Dale_, Nov 29 2018

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Last modified June 25 12:55 EDT 2022. Contains 354851 sequences. (Running on oeis4.)