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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A134841 Triangle read by rows: first n terms of n-th row of an array formed by A126988 * A053731(transform). 1
1, 2, 3, 3, 3, 4, 4, 6, 4, 7, 5, 5, 5, 5, 6, 6, 9, 8, 9, 6, 12, 7, 7, 7, 7, 7, 7, 8, 8, 12, 8, 14, 8, 12, 8, 15, 9, 9, 12, 9, 9, 12, 9, 9, 13, 10, 15, 10, 15, 12, 15, 10, 15, 10, 18 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Right border = sigma(n), A000203: (1, 3, 4, 7, 6, 12,...). Row sums = A001157: (1, 5, 10, 21, 26, 50, 50,...).

LINKS

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

EXAMPLE

First few terms of the array are:

1, 1, 1, 1, 1, 1, 1,...

2, 3, 2, 3, 2, 3, 2,...

3, 3, 4, 3, 3, 4, 3,...

4, 6, 4, 7, 4, 6, 4,...

5, 5, 5, 5, 5, 6, 5,...

6, 9, 8, 9, 6, 12,6,...

7, 7, 7, 7, 7, 7, 8,...

...

First few rows of the triangle are:

1;

2, 3;

3, 3, 4;

4, 6, 4, 7;

5, 5, 5, 5, 6;

6, 9, 8, 9, 6, 12;

7, 7, 7, 7, 7, 7, 8,

...

CROSSREFS

Cf. A051731, A126988, A001157, A000203.

Sequence in context: A156250 A029108 A181550 * A071112 A097087 A153161

Adjacent sequences:  A134838 A134839 A134840 * A134842 A134843 A134844

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Nov 12 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 15 12:22 EDT 2019. Contains 327078 sequences. (Running on oeis4.)