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 A104235 #18 May 08 2020 04:03:29 %S A104235 0,4,8,16,20,24,32,36,40,48,52,56,64,68,72,80,84,88,96,100,104,112, %T A104235 116,120,128,132,136,144,148,152,160,164,168,176,180,184,192,196,200, %U A104235 208,212,216,224,228,232,240,244,256,260,264,272,276,280,288,292,296,304,308,312 %N A104235 Numbers n such that A102370(n) = n. %C A104235 See A103543 and A103584 for much more about this sequence. %C A104235 Indices of the 0 values in A103863. %H A104235 Reinhard Zumkeller, <a href="/A104235/b104235.txt">Table of n, a(n) for n = 1..1000</a> %H A104235 David Applegate, Benoit Cloitre, Philippe Deléham and N. J. A. Sloane, Sloping binary numbers: a new sequence related to the binary numbers [<a href="http://neilsloane.com/doc/slopey.pdf">pdf</a>, <a href="http://neilsloane.com/doc/slopey.ps">ps</a>]. %H A104235 David Applegate, Benoit Cloitre, Philippe Deléham and N. J. A. Sloane, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL8/Sloane/sloane300.html">Sloping binary numbers: a new sequence related to the binary numbers</a>, J. Integer Seq. 8 (2005), no. 3, Article 05.3.6, 15 pp. %o A104235 (Haskell) %o A104235 a104235 n = a104235_list !! (n-1) %o A104235 a104235_list = [x | x <- [0..], a102370 x == toInteger x] %o A104235 -- _Reinhard Zumkeller_, Jul 21 2012 %Y A104235 Cf. A102370, A103543, A103584. Dividing by 4 gives A104401. %Y A104235 Cf. A105271, A214414. %K A104235 nonn,base %O A104235 1,2 %A A104235 _N. J. A. Sloane_, Apr 02 2005