%N Floor of decimal expansion of n read as if it were "base e".
%C Define e-basing of a decimal number as f(a) = a, f(ab) = Floor[a*e + b], f(abc) = Floor[ a*e^2 +b*e + c], etc. and generalize, where a,b,c are the digits. e =2.71828182845904523536028747135266...
%e a(135) = floor(1*e^2 + 3*e + 5) = floor(20.543901584307785933311289874633) = 20.
%A _Amarnath Murthy_, Nov 14 2002
%E More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 23 2003