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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A131325 Triangle |3*|A049310(n,k)| - 2| read by rows, 0<=k<=n. 5
1, 2, 1, 1, 2, 1, 2, 4, 2, 1, 1, 2, 7, 2, 1, 2, 7, 2, 10, 2, 1, 1, 2, 16, 2, 13, 2, 1, 2, 10, 2, 28, 2, 16, 2, 1, 1, 2, 28, 2, 43, 2, 19, 2, 1, 2, 13, 2, 58, 2, 61, 2, 22, 2, 1, 1, 2, 43, 2, 103, 2, 82, 2, 25, 2, 1, 2, 16, 2, 103, 2, 166, 2, 106, 2, 28, 2, 1, 1, 2, 61, 2, 208, 2, 250, 2 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..85.

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

1, 2, 1;

2, 4, 2, 1;

1, 2, 7, 2, 1;

2, 7, 2, 10, 2, 1;

1, 2, 16, 2, 13, 2, 1;

...

MAPLE

A131325 := proc(n, k)

    abs(3*abs(A049310(n, k))-2) ;

end proc:

seq(seq(A131325(n, k), k=0..n), n=0..12) ; # R. J. Mathar, Aug 13 2012

CROSSREFS

Cf. A049310, A131324, A131326 (row sums), A131327.

Sequence in context: A029306 A261363 A116491 * A193749 A049824 A133087

Adjacent sequences:  A131322 A131323 A131324 * A131326 A131327 A131328

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jun 28 2007

EXTENSIONS

Definition corrected by David Scambler, Aug 12 2012

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 21 11:19 EDT 2019. Contains 323443 sequences. (Running on oeis4.)