%I
%S 1,2,3,23,20880467999847912034355032910540
%N a(n) = a(n1)^a(n1)  a(n2)^a(n2) with a(0)=1 and a(1)=2.
%C a(6) is too large to include.
%e 23^23  3^3 = 20880467999847912034355032910540.
%t a[0] := 1; a[1] := 2; a[n_] := a[n] = a[n  1]^a[n  1]  a[n  2]^a[n  2]; Table[Floor[a[n]], {n, 0, 4}] (* _G. C. Greubel_, Dec 20 2017 *)
%K easy,nonn
%O 0,2
%A _Giovanni Teofilatto_, Feb 26 2006
%E Definition corrected and example added by _N. J. A. Sloane_, Jun 09 2017
