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

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A162796 Number of toothpicks in the toothpick structure A139250, that are orthogonal to the initial toothpick, after n even rounds. 10
0, 2, 6, 14, 22, 30, 42, 70, 86, 94, 106, 134, 154, 182, 222, 310, 342, 350, 362, 390, 410, 438, 478, 566, 602, 630, 670, 758, 814, 906, 1046, 1302, 1366, 1374, 1386, 1414, 1434, 1462, 1502, 1590, 1626, 1654, 1694, 1782, 1838, 1930, 2070, 2326, 2394, 2422, 2462 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Also, partial sums of A162794.

LINKS

Table of n, a(n) for n=0..50.

David Applegate, Omar E. Pol and N. J. A. Sloane, The Toothpick Sequence and Other Sequences from Cellular Automata

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

MAPLE

a139251 := BFILETOLIST("b139251.txt") ; A162794 := proc(n) global a139251; op(2*n, a139251) ; end: A162796 := proc(n) add( A162794(k), k=1..n) ; end: seq(A162796(n), n=1..120) ; [From R. J. Mathar, Sep 27 2009]

CROSSREFS

Cf. A139250, A139251, A159791, A159792, A162793, A162794, A162795, A162797.

Sequence in context: A262506 A228649 A268641 * A172304 A160164 A074729

Adjacent sequences:  A162793 A162794 A162795 * A162797 A162798 A162799

KEYWORD

nonn

AUTHOR

Omar E. Pol, Jul 14 2009

EXTENSIONS

Extended by R. J. Mathar, Sep 27 2009

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 December 8 09:03 EST 2016. Contains 278906 sequences.