The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A255280 A255279(2^n-1). 1
 1, 7, 25, 107, 413, 1615, 6241, 24227, 93973, 364743, 1415289, 5491643, 21307533, 82673535, 320773713, 1244606995, 4829092037, 18736941431, 72699560681, 282075165611, 1094454989757, 4246498377391, 16476464213569, 63928877142147 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Shalosh B. Ekhad, N. J. A. Sloane, and  Doron Zeilberger, A Meta-Algorithm for Creating Fast Algorithms for Counting ON Cells in Odd-Rule Cellular Automata, arXiv:1503.01796, 2015; see also the Accompanying Maple Package. Shalosh B. Ekhad, N. J. A. Sloane, and  Doron Zeilberger, Odd-Rule Cellular Automata on the Square Grid, arXiv:1503.04249, 2015. 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: Part 1, Part 2 N. J. A. Sloane, On the Number of ON Cells in Cellular Automata, arXiv:1503.01168, 2015 FORMULA G.f.: -(-1-2*t+7*t^2-12*t^3+16*t^5+16*t^6)/(1-5*t+3*t^2+9*t^3-16*t^4+16*t^6+16*t^7). CROSSREFS Cf. A255279. Sequence in context: A102900 A155271 A200152 * A327627 A110240 A266810 Adjacent sequences: A255277 A255278 A255279 * A255281 A255282 A255283 KEYWORD nonn AUTHOR N. J. A. Sloane and Doron Zeilberger, Feb 19 2015 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified November 28 08:48 EST 2022. Contains 358407 sequences. (Running on oeis4.)