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 A227535 #19 Sep 27 2015 10:29:09 %S A227535 2,3,4,5,15,17,23,42,44,47,68,80,107,130,142,162,184 %N A227535 Exponents e such that n^e is the least totient for some even n and all even k < n have a totient of the form k^f for some f < e. %C A227535 Records in A227533. %F A227535 a(n) = A227533(A227534(n)/2). %o A227535 (PARI) r=0;forstep(n=2,1e5,2, t=1; while(!istotient(n^t++),); if(t>r, r=t;print1(t", "))) %o A227535 \\ See also A227533 for a more efficient method of computing terms. %Y A227535 Cf. A227533, A227534. %K A227535 nonn,hard %O A227535 1,1 %A A227535 _Charles R Greathouse IV_, Jul 14 2013 %E A227535 a(14) from _Charles R Greathouse IV_, Jul 16 2013 %E A227535 a(15) from _Charles R Greathouse IV_, Jul 17 2013 %E A227535 a(16)-a(17) from _Charles R Greathouse IV_, Jul 19 2013