The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A267159 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A267159

Total number of ON (black) cells after n iterations of the "Rule 107" elementary cellular automaton starting with a single ON (black) cell.
(history; published version)

#14 by Peter Luschny at Fri Apr 19 07:10:40 EDT 2019

STATUS

reviewed

approved

#13 by Joerg Arndt at Fri Apr 19 06:29:44 EDT 2019

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proposed

reviewed

#12 by Colin Barker at Fri Apr 19 06:28:21 EDT 2019

STATUS

editing

proposed

#11 by Colin Barker at Fri Apr 19 06:28:04 EDT 2019

LINKS

<a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (1,1,-1,1,-1,-1,1).

FORMULA

From _Conjectures from _Colin Barker_, Jan 11 2016 and Apr 19 2019: (Start)

PROG

(PARI) Vec((1+x+2*x^2+4*x^3+2*x^4+2*x^5-x^6+x^7-4*x^8-x^9+x^10+x^11-x^12)/((1-x)^3*(1+x)^2*(1+x^2)) + O(x^100)) \\ Colin Barker, Jan 11 2016

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approved

editing

#10 by N. J. A. Sloane at Tue Jan 12 00:04:32 EST 2016

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proposed

approved

#9 by Robert Price at Mon Jan 11 22:30:22 EST 2016

STATUS

editing

proposed

#8 by Robert Price at Mon Jan 11 22:30:20 EST 2016

LINKS

Robert Price, <a href="/A267159/b267159.txt">Table of n, a(n) for n = 0..1000</a>

STATUS

approved

editing

#7 by N. J. A. Sloane at Mon Jan 11 21:22:50 EST 2016

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reviewed

approved

#6 by Michel Marcus at Mon Jan 11 14:43:44 EST 2016

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proposed

reviewed

#5 by Colin Barker at Mon Jan 11 13:51:45 EST 2016

STATUS

editing

proposed