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 A255478 #8 Mar 18 2015 00:26:11 %S A255478 1,80,624,16480,221888,4245888,66759424,1158095360,18967114752, %T A255478 318729757696,5260906022912,87309457787904,1439402906245120, %U A255478 23729936541559808,389928297670440960,6398667538798480384,104773970517568231424,1712967144350639066112,27958316901583753934848 %N A255478 The subsequence A255477(2^n-1). %H A255478 Shalosh B. Ekhad, <a href="/A255477/a255477.txt">Details about A255477 and A255478</a> %H A255478 Shalosh B. Ekhad, N. J. A. Sloane, and Doron Zeilberger, <a href="http://arxiv.org/abs/1503.01796">A Meta-Algorithm for Creating Fast Algorithms for Counting ON Cells in Odd-Rule Cellular Automata</a>, arXiv:1503.01796, 2015; see also the <a href="http://www.math.rutgers.edu/~zeilberg/mamarim/mamarimhtml/CAcount.html">Accompanying Maple Package</a>. %H A255478 Shalosh B. Ekhad, N. J. A. Sloane, and Doron Zeilberger, <a href="http://arxiv.org/abs/1503.04249">Odd-Rule Cellular Automata on the Square Grid</a>, arXiv:1503.04249, 2015. %H A255478 N. J. A. Sloane, On the No. of ON Cells in Cellular Automata, Video of talk in Doron Zeilberger's Experimental Math Seminar at Rutgers University, Feb. 05 2015: <a href="https://vimeo.com/119073818">Part 1</a>, <a href="https://vimeo.com/119073819">Part 2</a> %H A255478 N. J. A. Sloane, <a href="http://arxiv.org/abs/1503.01168">On the Number of ON Cells in Cellular Automata</a>, arXiv:1503.01168, 2015 %H A255478 <a href="/index/Ce#cell">Index entries for sequences related to cellular automata</a> %F A255478 For g.f. see Ekhad link. %Y A255478 Cf. A255477. %K A255478 nonn %O A255478 0,2 %A A255478 _Doron Zeilberger_, Feb 26 2015