This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A280799 #8 Jan 08 2017 11:42:55 %S A280799 0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,2,0,0,2,3,0,3,0,2,0,0,0,0,0,3,0, %T A280799 0,0,3,2,0,0,4,0,6,3,0,3,4,0,6,3,0,0,3,2,4,0,3,0,2,0,0,0,3,0,0,3,2,0, %U A280799 4,0,3,0,4,3,4,3,0,0,4,0,3,4,7,0,0,6,0,4,5,0,4,4,0,4,4,0,0,6,0,4,3,0,3,0,0,3,6,3,4 %N A280799 a(n) = A049502(phi(n)). %C A280799 a(n) = Major index (2nd definition) of the total numbers <=n and prime to n i.e., phi(n). %H A280799 Indranil Ghosh, <a href="/A280799/b280799.txt">Table of n, a(n) for n = 1..10000</a> %H A280799 Indranil Ghosh, <a href="/A280799/a280799.txt">Python Program to generate the sequence</a> %F A280799 a(n) = A049502(A000010(n)). %e A280799 For n = 11, phi(n) = 10 and major index (2nd definition) of 10 = 2. So a(n) = 2. %Y A280799 Cf. A000010, A049502, A279519, A280062, A280726. %K A280799 nonn %O A280799 1,11 %A A280799 _Indranil Ghosh_, Jan 08 2017