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A160411 Number of cells turned "ON" at n-th stage of A160117. 8
1, 8, 4, 28, 8, 52, 12, 76, 16, 100, 20, 124, 24, 148, 28, 172, 32, 196, 36, 220, 40, 244, 44, 268, 48, 292, 52, 316, 56, 340, 60, 364, 64, 388, 68, 412, 72, 436, 76, 460, 80, 484, 84, 508, 88, 532, 92, 556, 96 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

First differences of A160117.

It appears that one of the bisections is A008574. - Omar E. Pol, Sep 20 2011

LINKS

Table of n, a(n) for n=1..49.

N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS

Index entries for sequences related to cellular automata

Index entries for linear recurrences with constant coefficients, signature (0,2,0,-1).

FORMULA

G.f.: x*(x^2+1)*(4*x^3+x^2+8*x+1) / ((x-1)^2*(x+1)^2). - Colin Barker, Mar 04 2013

a(n) = -11-9*(-1)^n+(7+5*(-1)^n)*n for n>2. a(n) = 2*a(n-2)-a(n-4) for n>6. - Colin Barker, Apr 06 2013

CROSSREFS

Cf. A139251, A160117, A160411, A160413, A160415.

Sequence in context: A173855 A143368 A160415 * A033473 A238163 A213773

Adjacent sequences:  A160408 A160409 A160410 * A160412 A160413 A160414

KEYWORD

nonn,easy

AUTHOR

Omar E. Pol, Jun 13 2009

EXTENSIONS

More terms a(10)-a(27) from Omar E. Pol, Mar 26 2011

More terms from Colin Barker, Apr 06 2013

STATUS

approved

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Last modified February 19 22:38 EST 2019. Contains 320328 sequences. (Running on oeis4.)