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
!)
A030237
as a triangular array
1
1
2
1
3
5
1
4
9
14
1
5
14
28
42
1
6
20
48
90
132
1
7
27
75
165
297
429
1
8
35
110
275
572
1001
1430
1
9
44
154
429
1001
2002
3432
4862
1
10
54
208
637
1638
3640
7072
11934
16796
1
11
65
273
910
2548
6188
13260
25194
41990
58786
A030237
as a square array
1
1
1
1
1
1
1
1
1
1
1
2
3
4
5
6
7
8
9
10
11
5
9
14
20
27
35
44
54
65
14
28
48
75
110
154
208
273
42
90
165
275
429
637
910
132
297
572
1001
1638
2548
429
1001
2002
3640
6188
1430
3432
7072
13260
4862
11934
25194
16796
41990
58786
A030237
as an upper right triangle
1
1
1
1
1
1
1
1
1
1
1
2
3
4
5
6
7
8
9
10
11
5
9
14
20
27
35
44
54
65
14
28
48
75
110
154
208
273
42
90
165
275
429
637
910
132
297
572
1001
1638
2548
429
1001
2002
3640
6188
1430
3432
7072
13260
4862
11934
25194
16796
41990
58786
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 16 20:35 EDT 2024. Contains 372555 sequences. (Running on oeis4.)