%I #9 Jan 01 2024 13:36:56
%S 0,1,3,5,8,11,14,17,20,23,27,30,34,37,41,45,49,53,57,61,65,69,73,77,
%T 81,85,90,94,98,103,107,112,116,121,125,130,134,139,144,148,153,158,
%U 163,167,172,177,182,187,192,196,201,206,211,216,221,226,231,236,241,247
%N a(n) = floor(log(log(n^n^n))) (or 0 if not finite).
%F a(n) = floor(n*log(n) + log(log(n))).
%e 3^3^3 = 3^27 = 7625597484987. Log(log(7625597484987)) = 3.38..., so a(3)= 3.
%t Table[ Floor[ n * Log[n] + Log[ Log[n]]], {n, 2, 60}]
%Y Cf. A002488, A000312, A050504.
%K nonn
%O 1,3
%A _Neil Fernandez_, Nov 20 2002
%E Edited by _Robert G. Wilson v_, Nov 22 2002