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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A140699 Triangle read by rows: A054524*A140256. 1
1, 2, -1, 3, 0, -1, 2, -2, 0, 0, 5, 0, 0, 0, -1, 1, -3, -2, 0, 0, 1, 7, 0, 0, 0, 0, 0, -1, 2, -2, 0, 0, 0, 0, 0, 0, 3, 0, -3, 0, 0, 0, 0, 0, 0, 1, -5, 0, 0, -2, 0, 0, 0, 0, 1, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 1, -1, -2, 0, 0, 2, 0, 0, 0, 0, 0, 0, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 1, -7, 0, 0, 0, 0, -2, 0, 0, 0, 0, 0, 0, 1, 1, 0, -5, 0, -3, 0, 0, 0, 0, 0, 0, 0 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row products are A140700. Similar to table A140256. Can perhaps be seen as taking the moebius function of A126988 times the mangoldt function of A126988.

LINKS

Table of n, a(n) for n=1..117.

FORMULA

a(n) = A054524*A140256

EXAMPLE

1;

2, -1;

3, 0, -1;

2, -2, 0, 0;

5, 0, 0, 0, -1;

1, -3, -2, 0, 0, 1;

7, 0, 0, 0, 0, 0, -1;

2, -2, 0, 0, 0, 0, 0, 0;

3, 0, -3, 0, 0, 0, 0, 0, 0;

1, -5, 0, 0, -2, 0, 0, 0, 0, 1;

11,0, 0, 0, 0, 0, 0, 0, 0, 0, -1;

CROSSREFS

Cf. A054524, A140256, A126988, A140700.

Sequence in context: A277322 A182740 A228786 * A140256 A126206 A307744

Adjacent sequences:  A140696 A140697 A140698 * A140700 A140701 A140702

KEYWORD

sign,tabl

AUTHOR

Mats O. Granvik and Gary W. Adamson, May 24 2008

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 October 17 06:08 EDT 2019. Contains 328106 sequences. (Running on oeis4.)