



1, 9, 17, 41, 49, 113, 137, 249, 257, 321, 385, 577, 601, 793, 905, 1321, 1329, 1393, 1457, 1649, 1713, 2225, 2417, 3313, 3337, 3529, 3721, 4297, 4409, 5305, 5721, 7449, 7457, 7521, 7585, 7777, 7841, 8353, 8545, 9441, 9505, 10017, 10529, 12065
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OFFSET

0,2


COMMENTS

Also, total number of cubic ON cells after n generations in a threedimensional cellular automaton where A160239(n) gives the number of cubic ON cells in the nth level of the structure starting from the top. An ON cell remains ON forever. The structure looks like an irregular step pyramid.  Omar E. Pol, Jan 27 2015


LINKS

N. J. A. Sloane, Table of n, a(n) for n = 0..16383
N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS
N. J. A. Sloane, On the Number of ON Cells in Cellular Automata, arXiv:1503.01168, 2015
Index entries for sequences related to cellular automata


FORMULA

a(n) = 1 + 8*A245540(n), n >= 1.  Omar E. Pol, Mar 07 2015


MATHEMATICA

b[n_] := b[n] = Which[n == 1, 1, Mod[n, 2] == 0, b[n/2], Mod[n, 4] == 3, 2b[(n  1)/2] + b[n  2], True, 8b[(n  1)/4]];
Join[{1}, 1 + 8 Accumulate[Array[b, 43]]] (* JeanFrançois Alcover, Oct 01 2018, after Omar E. Pol *)


PROG

(Haskell)
a245542 n = a245542_list !! n
a245542_list = scanl1 (+) a160239_list
 Reinhard Zumkeller, Feb 13 2015


CROSSREFS

Cf. A116520, A160239, A245540, A253908, A253767.
Sequence in context: A055393 A147082 A145941 * A186298 A147245 A146625
Adjacent sequences: A245539 A245540 A245541 * A245543 A245544 A245545


KEYWORD

nonn,look


AUTHOR

N. J. A. Sloane, Jul 26 2014


EXTENSIONS

Offset changed to 0 by N. J. A. Sloane, Feb 06 2015


STATUS

approved



