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 A081703 #11 Apr 13 2017 21:33:25 %S A081703 187,221,247,493,403,943,1273,2117,2263,2257,5863,3589,7519,20915, %T A081703 9139,6851,14443,8917,18031,9553,24583,26923,6161,55709,7957,24217, %U A081703 17587,26197,12871,10001,89813,13213,16531,40837,42517,218867,59891,95719 %N A081703 Largest proper divisor of the n-th Carmichael number (A002997). %H A081703 Robert Israel, <a href="/A081703/b081703.txt">Table of n, a(n) for n = 1..10000</a> %H A081703 J. Perry, <a href="http://www.users.globalnet.co.uk/~perry/maths/carmichaelsqrt/carmichaelsqrt.htm">Carmichael factors</a> %F A081703 a(n) = A032742(A002997(n)) - _David Wasserman_, Jun 18 2004 %F A081703 a(n) = A002997(n)/A141710(n). - _Robert Israel_, Apr 13 2017 %e A081703 The first Carmichael number is 3*11*17, so a(1) = 11*17. %p A081703 seq(A002997[n]/min(numtheory:-factorset(A002997[n])), n=1..100); # _Robert Israel_, Apr 13 2017 %Y A081703 Cf. A002997, A032742, A141710. %K A081703 nonn %O A081703 1,1 %A A081703 _Lekraj Beedassy_, Apr 02 2003 %E A081703 More terms from _David Wasserman_, Jun 18 2004