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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A153490 Anti-diagonal of Sierpinski carpet binary square matrix as a triangular sequence; (uses MathWorld definition program). 0
1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row sums are:

{1, 2, 2, 4, 5, 4, 6, 6, 4, 8, 10, 8,...}.

LINKS

Table of n, a(n) for n=1..78.

Eric Weisstein's World of Mathematics, Sierpinski Carpet.

EXAMPLE

{1},

{1, 1},

{1, 0, 1},

{1, 1, 1, 1},

{1, 1, 1, 1, 1},

{1, 0, 1, 1, 0, 1},

{1, 1, 1, 0, 1, 1, 1},

{1, 1, 1, 0, 0, 1, 1, 1},

{1, 0, 1, 0, 0, 0, 1, 0, 1},

{1, 1, 1, 1, 0, 0, 1, 1, 1, 1},

{1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1},

{1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1}

MATHEMATICA

<< MathWorld`Fractal`; fractal = SierpinskiCarpet;

a = fractal[4]; Table[Table[a[[m]][[n - m + 1]], {m, 1, n}], {n, 1, 12}];

Flatten[%]

CROSSREFS

Sequence in context: A059095 A105597 A071026 * A014194 A014379 A014164

Adjacent sequences:  A153487 A153488 A153489 * A153491 A153492 A153493

KEYWORD

nonn,uned,tabl

AUTHOR

Roger L. Bagula, Dec 27 2008

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified November 22 20:13 EST 2014. Contains 249827 sequences.