login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A245542 Partial sums of A160239. 8
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Also, total number of cubic ON cells after n generations in a three-dimensional cellular automaton where A160239(n) gives the number of cubic ON cells in the n-th level of the structure starting from the top. An ON cell remains ON for ever. 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

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

AUTHOR

N. J. A. Sloane, Jul 26 2014

EXTENSIONS

Offset changed to 0 by N. J. A. Sloane, Feb 06 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 | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified February 25 03:40 EST 2018. Contains 299630 sequences. (Running on oeis4.)