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!)
A128259 Inverse Moebius transform of A128229. 2
1, 2, 1, 1, 2, 1, 2, 1, 3, 1, 1, 0, 0, 4, 1, 2, 3, 1, 0, 5, 1, 1, 0, 0, 0, 0, 6, 1, 2, 1, 3, 1, 0, 0, 7, 1, 1, 2, 1, 0, 0, 0, 0, 8, 1, 2, 1, 0, 4, 1, 0, 0, 0, 9, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = sigma(n), A000203: (1, 3, 4, 7, 6, 12, 8,...) A128260 = A128229 * A051731

LINKS

Table of n, a(n) for n=1..55.

FORMULA

A051731 * A128229

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

1, 2, 1;

2, 1, 3, 1;

1, 0, 0, 4, 1;

2, 3, 1, 0, 5, 1;

...

CROSSREFS

Cf. A128229, A051731, A000203, A128260.

Sequence in context: A266224 A029396 A084746 * A051194 A134838 A049843

Adjacent sequences:  A128256 A128257 A128258 * A128260 A128261 A128262

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Feb 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 September 27 00:14 EDT 2020. Contains 337378 sequences. (Running on oeis4.)