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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A156241 Triangle read by rows, T(n,k). If k divides n then A008683(n)*A008683(k). 3
1, -1, 1, -1, 0, 1, 0, 0, 0, 1, -1, 0, 0, 0, 1, 1, -1, -1, 0, 0, 1, -1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, -1, 0, 0, -1, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, -1, 0, 0, 0, 0, -1, 0, 0 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A008683 is found in the first column. A087003 appears in the second column.

The definition does not match the values for n=k. Apparently T(n,n) has been set to 1, not mu(n)*mu(n). [From R. J. Mathar, Mar 14 2009]

LINKS

Table of n, a(n) for n=1..100.

CROSSREFS

Sequence in context: A183918 A128408 A121802 * A156254 A010056 A283437

Adjacent sequences:  A156238 A156239 A156240 * A156242 A156243 A156244

KEYWORD

sign,tabl

AUTHOR

Mats Granvik, Feb 07 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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 20 22:51 EST 2019. Contains 320362 sequences. (Running on oeis4.)