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.

A008805 Triangular numbers repeated.

Table of values

n a(n)
0 1
1 1
2 3
3 3
4 6
5 6
6 10
7 10
8 15
9 15
10 21
11 21
12 28
13 28
14 36
15 36
16 45
17 45
18 55
19 55
20 66
21 66
22 78
23 78
24 91
25 91
26 105
27 105
28 120
29 120
30 136
31 136
32 153
33 153
34 171
35 171
36 190
37 190
38 210
39 210
40 231
41 231
42 253
43 253
44 276
45 276
46 300
47 300
48 325
49 325
50 351
51 351
52 378
53 378
54 406
55 406
56 435
57 435

List of values

[1, 1, 3, 3, 6, 6, 10, 10, 15, 15, 21, 21, 28, 28, 36, 36, 45, 45, 55, 55, 66, 66, 78, 78, 91, 91, 105, 105, 120, 120, 136, 136, 153, 153, 171, 171, 190, 190, 210, 210, 231, 231, 253, 253, 276, 276, 300, 300, 325, 325, 351, 351, 378, 378, 406, 406, 435, 435]