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.

A204849 A Motzkin triangle by rows.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 1
5 1
6 4
7 3
8 1
9 1
10 9
11 6
12 4
13 1
14 1
15 21
16 15
17 8
18 5
19 1
20 1
21 51
22 36
23 22
24 10
25 6
26 1
27 1
28 127
29 91
30 54
31 30
32 12
33 7
34 1
35 1
36 323
37 232
38 142
39 75
40 39
41 14
42 8
43 1
44 1
45 835
46 603
47 370
48 205
49 99
50 49
51 16
52 9
53 1
54 1
55 2188
56 1585
57 983
58 545
59 281
60 126
61 60
62 18
63 10
64 1
65 1

List of values

[1, 1, 1, 2, 1, 1, 4, 3, 1, 1, 9, 6, 4, 1, 1, 21, 15, 8, 5, 1, 1, 51, 36, 22, 10, 6, 1, 1, 127, 91, 54, 30, 12, 7, 1, 1, 323, 232, 142, 75, 39, 14, 8, 1, 1, 835, 603, 370, 205, 99, 49, 16, 9, 1, 1, 2188, 1585, 983, 545, 281, 126, 60, 18, 10, 1, 1]