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 A153499 #9 Oct 15 2024 14:28:34 %S A153499 1,5,17,85,365,1365,5285,21845,88757,349525,1387157,5592405,22457045, %T A153499 89478485,357214805,1431655765,5732215637,22906492245,91581229397, %U A153499 366503875925,1466373418325,5864062014805,23453384746325,93824992236885 %N A153499 a(n) is the number whose binary expansion is A153500(n). %C A153499 Empirical g.f. confirmed similar to A153497 and A153498. - _Ray Chandler_, Oct 15 2024 %H A153499 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (5, -14, 50, -56, 80, -64). %F A153499 Empirical g.f.: -x*(64*x^6-80*x^5+16*x^4-20*x^3-6*x^2-1) / ((x-1)*(4*x-1)*(2*x^2+1)*(8*x^2+1)). - _Colin Barker_, Sep 17 2013 %Y A153499 Cf. A135576, A153497, A153498, A153500. %K A153499 easy,nonn %O A153499 1,2 %A A153499 _Omar E. Pol_, Dec 27 2008 %E A153499 More terms from _R. J. Mathar_, Feb 20 2009