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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A134676 A127172 * A127648. 1
1, 3, 2, 3, 0, 3, 6, 6, 0, 4, 3, 0, 0, 0, 5, 9, 6, 9, 0, 0, 6, 3, 0, 0, 0, 0, 0, 7, 10, 12, 0, 12, 0, 0, 0, 8, 6, 0, 9, 0, 0, 0, 0, 0, 9, 9, 6, 0, 0, 15, 0, 0, 0, 0, 10 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Left column = A007425: (1, 3, 3, 6, 3, 9, 3, 10,...).R Row sums = A007430: (1, 5, 6, 16, 8, 30, 10, 42,...)

LINKS

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

FORMULA

A127172 * A127648 = A051731^3 * A127648 as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

3, 2;

3, 0, 3;

6, 6, 0, 4;

3, 0, 0, 0, 5;

9, 6, 9, 0, 0, 6;

3, 0, 0, 0, 0, 0, 7;

...

CROSSREFS

Cf. A127172, A051731, A127648, A007430, A007425.

Sequence in context: A230409 A244543 A283979 * A286246 A286249 A239146

Adjacent sequences:  A134673 A134674 A134675 * A134677 A134678 A134679

KEYWORD

nonn

AUTHOR

Gary W. Adamson, Nov 05 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 April 23 09:35 EDT 2019. Contains 322385 sequences. (Running on oeis4.)