The OEIS mourns the passing of
Jim Simons
and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A046540
as a triangular array
1
1
1
1
3
1
1
3
3
1
1
3
3
3
1
1
3
1
1
3
1
1
3
3
1
3
3
1
1
3
3
3
3
3
3
1
1
3
1
1
3
1
1
3
1
1
3
3
1
3
3
1
3
3
1
1
3
3
3
3
3
3
3
3
3
1
1
3
1
1
1
1
1
1
1
1
3
1
1
3
3
1
1
1
1
1
1
A046540
as a square array
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
3
3
3
3
3
3
3
3
3
3
1
3
3
1
3
3
1
3
3
1
3
1
3
1
1
3
1
1
3
1
1
1
3
3
3
3
3
3
1
1
1
3
3
1
3
3
1
1
1
3
1
1
3
1
1
1
3
3
3
1
1
1
3
3
1
1
1
3
1
1
3
1
A046540
as an upper right triangle
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
3
3
3
3
3
3
3
3
3
3
1
3
3
1
3
3
1
3
3
1
3
1
3
1
1
3
1
1
3
1
1
1
3
3
3
3
3
3
1
1
1
3
3
1
3
3
1
1
1
3
1
1
3
1
1
1
3
3
3
1
1
1
3
3
1
1
1
3
1
1
3
1
Lookup
|
Welcome
|
Wiki
|
Register
|
Music
|
Plot 2
|
Demos
|
Index
|
Browse
|
More
|
WebCam
Contribute new seq. or comment
|
Format
|
Style Sheet
|
Transforms
|
Superseeker
|
Recents
The OEIS Community
| Maintained by
The OEIS Foundation Inc.
License Agreements, Terms of Use, Privacy Policy.
.
Last modified May 13 03:04 EDT 2024. Contains 372497 sequences. (Running on oeis4.)
