OFFSET
0,1
REFERENCES
Next term is too large to include.
This function is a particular instance of the fast-iteration hierarchy function F[k]_n(x). Here we have f_n(x) = F[3]_n(x). See A275000 for details and definitions and formulae.
MATHEMATICA
f[0, x_] := x + 3; f[n_, x_] := Nest[f[n - 1, # ]&, x, x]; Table[f[n, 2], {n, 0, 3}]
CROSSREFS
KEYWORD
nonn
AUTHOR
Natan Arie Consigli, Nov 09 2016
STATUS
approved