login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A133704 A051731 * a diagonalized matrix of A133696. 1
1, 1, -3, 1, 0, -3, 1, -3, 0, -1, 1, 0, 0, 0, -3, 1, -3, -3, 0, 0, 1, 1, 0, 0, 0, 0, 0, -3, 1, -3, 0, -1, 0, 0, 0, -1, 1, 0, -3, 0, 0, 0, 0, 0, -1, 1, -3, 0, 0, -3, 0, 0, 0, 0, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Row sums = signed d(n), A000005: (1, -2, -2, -3, -2, -4, -2, -4, -3, ...).

LINKS

Table of n, a(n) for n=0..54.

FORMULA

A051731 * A133696: (1, -3, -3, -1, -3, ...), where A133696(n) = 2*mu(n) - 1.

EXAMPLE

First few rows of the triangle are:

  1;

  1, -3;

  1,  0, -3;

  1, -3,  0, -1;

  1,  0,  0,  0, -3;

  1, -3, -3,  0,  0,  1;

  ...

CROSSREFS

Cf. A051731, A133696, A008683.

Sequence in context: A244679 A035674 A058600 * A160019 A265605 A035629

Adjacent sequences:  A133701 A133702 A133703 * A133705 A133706 A133707

KEYWORD

tabl,sign

AUTHOR

Gary W. Adamson, Sep 21 2007

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 9 13:42 EDT 2021. Contains 343742 sequences. (Running on oeis4.)