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A217034 E.g.f.: 1-log(1-log(1-log(1-x))). 0

%I #13 Aug 24 2017 04:10:01

%S 1,1,1,3,11,57,354,2657,23001,227364,2517898,30934340,417240592,

%T 6132179622,97529525040,1669193368918,30588551262442,597618281777224,

%U 12400582017332944,272361147076466888,6312733766495858856,153984431772484535840,3943242146803039347776

%N E.g.f.: 1-log(1-log(1-log(1-x))).

%F a(n) ~ (n-1)! / (1-exp(1-exp(1)))^n. - _Vaclav Kotesovec_, Aug 24 2017

%e E.g.f.: A(x) = 1 + x + x^2/2! + 3*x^3/3! + 11*x^4/4! + 57*x^5/5! + 354*x^6/6! +...

%t With[{nn=30},CoefficientList[Series[1-Log[1-Log[1-Log[1-x]]],{x,0,nn}],x] Range[0,nn]!] (* _Harvey P. Dale_, Jun 23 2017 *)

%o (PARI) {a(n)=n!*polcoeff(1-log(1-log(1-log(1-x +x*O(x^n)))),n)}

%o for(n=0,25,print1(a(n),", "))

%K nonn

%O 0,4

%A _Paul D. Hanna_, Sep 24 2012

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Last modified April 25 12:33 EDT 2024. Contains 371969 sequences. (Running on oeis4.)