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 A253766 #8 Jan 27 2015 01:16:58 %S A253766 2,4,8,14,6,12,16,10,20,22,11,33,45,51,17,85,55,65,91,49,63,42,44,40, %T A253766 50,48,52,46,56,62,31,93,99,77,119,133,161,175,105,70,76,80,86,43,129, %U A253766 135,125,145,155,165,90,96,100,104,98,106,53,265,185,195,143,121,187,110,122,61,427,183,189,201,67,335,205,215,235,225,140,146,73,365 %N A253766 Bisection of A098550. %F A253766 a(n) = A098550(2n). %Y A253766 Cf. A098550, A253765. %K A253766 nonn %O A253766 1,1 %A A253766 _Omar E. Pol_, Jan 20 2015