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 A102459 #3 Mar 30 2012 18:35:42 %S A102459 80519,143,77,161,77,299,437,143,77,407,611,581,319,377,161,893,209, %T A102459 989,989,713,583,377,1073,533,893,143,913,209,77,713,749,209,143,319, %U A102459 1133,77,1817,899,1633,2033,1943,371,913,77,1349,2491,1883,319,161,1643 %N A102459 a(n) = A102457(k) for k in A102458. For these k, A102457(k) != lpf(k-1). %F A102459 a(n) = A102457(A102458(n)) %Y A102459 Cf. A102457, A102458. %K A102459 nonn %O A102459 1,1 %A A102459 _David W. Wilson_, Jan 09 2005