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 A066124 #13 Dec 05 2024 21:48:52
%S A066124 44,50,54,58,72,92,98,118,154,156,184,194,206,214,216,234,242,272,296,
%T A066124 316,364,376,386,406,466,470,478,502,564,566,570,572,626,628,634,688,
%U A066124 690,696,716,732,748,752,770,790,798,806,814,820,822,824,854,870,880
%N A066124 Numbers that in base 2 need three 'Reverse and Add' steps to reach a palindrome.
%C A066124 The analog of A065208 in base 2. The number of steps starts at 0, so palindromes (cf. A006995) are excluded.
%C A066124 Numbers k such that A066057(k) = 3. - _Andrew Howroyd_, Dec 05 2024
%H A066124 Harry J. Smith, <a href="/A066124/b066124.txt">Table of n, a(n) for n=1,...,1000</a>
%H A066124 <a href="/index/Res#RAA">Index entries for sequences related to Reverse and Add!</a>
%o A066124 (PARI) isok(n,s=3)={for(k=0, s, my(r=fromdigits(Vecrev(binary(n)),2)); if(r==n, return(k==s)); n += r); 0} \\ _Andrew Howroyd_, Dec 05 2024
%Y A066124 Cf. A006995, A065208, A066057, A066122.
%K A066124 base,nonn
%O A066124 1,1
%A A066124 _Klaus Brockhaus_, Dec 08 2001
%E A066124 Offset changed from 0 to 1 by _Harry J. Smith_, Feb 01 2010