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 A035114 #18 Jul 02 2025 16:01:56 %S A035114 1,2,2,4,4,4,6,6,8,8,8,8,10,12,12,12,12,16,16,16,16,16,18,18,20,20,20, %T A035114 22,24,24,24,24,24,24,24,28,30,32,32,32,32,32,32,36,36,36,36,36,40,40, %U A035114 40,40,40,40,42,42,44,44,46,48,48,48,48,48,48,48,48,48 %N A035114 Values of phi(n) corresponding to A035113. %H A035114 Dumitru Damian, <a href="/A035114/b035114.txt">Table of n, a(n) for n = 1..10000</a> %H A035114 L. C. Washington, <a href="https://doi.org/10.1007/978-1-4612-1934-7_15">The Main Conjecture and Annihilation of Class Groups</a>, In: Introduction to Cyclotomic Fields, Graduate Texts in Mathematics, vol 83 (1997) Springer, New York, NY. %F A035114 a(n) = A000010(A035113(n)). - _Michel Marcus_, Feb 07 2022 %e A035114 phi(1)=1, phi(3)=2, phi(4)=2, phi(5)=4, ... %o A035114 (Python) from sympy import totient as A000010 %o A035114 def lov(n): return sorted([[A000010(n), n] for n in range(1,n) if n%4 != 2]) %o A035114 print([x[0] for x in lov(200)][:100]) # _Dumitru Damian_, Feb 03 2022 %Y A035114 Cf. A000010, A035113. %Y A035114 Cf. A002181, A002202, A007614, A014197, A016825, A032447, A058277. %K A035114 nonn,easy %O A035114 1,2 %A A035114 _N. J. A. Sloane_ %E A035114 More terms from _James Sellers_ %E A035114 a(43) onward corrected by _Sean A. Irvine_, Sep 26 2020