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.

A109649 Entries in 3-dimensional version of Pascal triangle: trinomial coefficients.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 1
6 2
7 2
8 1
9 1
10 3
11 3
12 1
13 3
14 6
15 3
16 3
17 3
18 1
19 1
20 4
21 6
22 4
23 1
24 4
25 12
26 12
27 4
28 6
29 12
30 6
31 4
32 4
33 1
34 1
35 5
36 10
37 10
38 5
39 1
40 5
41 20
42 30
43 20
44 5
45 10
46 30
47 30
48 10
49 10
50 20
51 10
52 5
53 5
54 1
55 1
56 6
57 15
58 20
59 15
60 6
61 1
62 6
63 30
64 60
65 60
66 30
67 6
68 15
69 60
70 90
71 60
72 15
73 20
74 60
75 60
76 20
77 15
78 30
79 15
80 6

List of values

[1, 1, 1, 1, 2, 1, 2, 2, 1, 1, 3, 3, 1, 3, 6, 3, 3, 3, 1, 1, 4, 6, 4, 1, 4, 12, 12, 4, 6, 12, 6, 4, 4, 1, 1, 5, 10, 10, 5, 1, 5, 20, 30, 20, 5, 10, 30, 30, 10, 10, 20, 10, 5, 5, 1, 1, 6, 15, 20, 15, 6, 1, 6, 30, 60, 60, 30, 6, 15, 60, 90, 60, 15, 20, 60, 60, 20, 15, 30, 15, 6]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.