cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A279004 Irregular triangle read by rows: generalized Catalan triangle C_3(n,k).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 3
6 3
7 1
8 3
9 6
10 9
11 9
12 1
13 4
14 10
15 19
16 28
17 28
18 1
19 5
20 15
21 34
22 62
23 90
24 90
25 1
26 6
27 21
28 55
29 117
30 207
31 297
32 297
33 1
34 7
35 28
36 83
37 200
38 407
39 704
40 1001
41 1001
42 1
43 8
44 36
45 119
46 319
47 726
48 1430
49 2431
50 3432
51 3432

List of values

[1, 1, 1, 1, 2, 3, 3, 1, 3, 6, 9, 9, 1, 4, 10, 19, 28, 28, 1, 5, 15, 34, 62, 90, 90, 1, 6, 21, 55, 117, 207, 297, 297, 1, 7, 28, 83, 200, 407, 704, 1001, 1001, 1, 8, 36, 119, 319, 726, 1430, 2431, 3432, 3432]