A075744 Hierarchies of hierarchies.
1, 1, 5, 36, 338, 3898, 53173, 835992, 14864340, 294606273, 6434871231, 153473830678, 3966604562709, 110386840008838, 3289768253831145, 104502173165838799, 3523895395660532937, 125689588963370029163, 4726867751402704638366, 186902021178952943036080
Offset: 0
Keywords
Links
- T. D. Noe, Table of n, a(n) for n=0..100
Programs
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Mathematica
m = 20; f[x_] = Exp[1/(2 - Exp[x]) - 1]; CoefficientList[Exp[f[x] - 1] + O[x]^m, x]*Range[0, m - 1]! (* Jean-François Alcover, Feb 24 2019 *)
Formula
E.g.f.: exp(f(x)-1) where f(x) = e.g.f. for A075729.
Comments