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 A060138 #19 Jan 05 2025 19:51:36 %S A060138 0,2,3,5,8,9,12,15,17,20,23,29,32,33,36,39,45,48,57,60,63,65,68,71,77, %T A060138 80,89,92,95,113,116,119,125,128,129,132,135,141,144,153,156,159,177, %U A060138 180,183,189,192,225,228,231,237,240,249,252,255,257,260,263,269,272,281 %N A060138 Ordered set S defined by these rules: 0 and 2 are in S and if x is a nonzero number in S, then 2x-1 and 4x are in S. %C A060138 The numbers 2 and 4x occupy the same positions in S that 1 occupies in the infinite Fibonacci word (A003849). %H A060138 Ivan Neretin, <a href="/A060138/b060138.txt">Table of n, a(n) for n = 0..10000</a> %H A060138 Clark Kimberling, <a href="http://www.cs.uwaterloo.ca/journals/JIS/VOL3/goldentext.html">A Self-Generating Set and the Golden Mean</a>, J. Integer Sequences, 3 (2000), #00.2.8. %H A060138 Clark Kimberling, <a href="https://web.archive.org/web/2024*/https://www.fq.math.ca/Papers1/52-3/Kimberling11132013.pdf">Fusion, Fission, and Factors</a>, Fib. Q., 52 (2014), 195-202. %Y A060138 Cf. A060142. %K A060138 nonn %O A060138 0,2 %A A060138 _Clark Kimberling_, Mar 05 2001 %E A060138 Missing term a(55)=257 added by _Ivan Neretin_, Jun 19 2018