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 A256424 #10 Mar 30 2017 22:06:33 %S A256424 1,4,6,4,4,8,6,10,12,10,14,10,14,18,14,16,27,20,22,24,22,26,22,26,28, %T A256424 26,32,30,34,25,34,35,34,40,42,38,36,38,44,38,46,45,46,48,46,50,54,52, %U A256424 58,56,58,49,58,63,60,77,62,55,62,65,62,70 %N A256424 A255582 smoothed by replacing each prime p with 2p and each thrice-prime 3p also with 2p. %C A256424 The result is to change a three-pronged graph to a single line. %H A256424 N. J. A. Sloane, <a href="/A256424/b256424.txt">Table of n, a(n) for n = 1..3203</a> %Y A256424 Cf. A255582. %K A256424 nonn %O A256424 1,2 %A A256424 _N. J. A. Sloane_, Apr 08 2015