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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.

A368045 Triangle read by rows. T(n, k) = (k*(k + 1)*(2*k + 1) + n*(n + 1)*(2*n + 1)) / 6.

Table of values

n a(n)
0 0
1 1
2 2
3 5
4 6
5 10
6 14
7 15
8 19
9 28
10 30
11 31
12 35
13 44
14 60
15 55
16 56
17 60
18 69
19 85
20 110
21 91
22 92
23 96
24 105
25 121
26 146
27 182
28 140
29 141
30 145
31 154
32 170
33 195
34 231
35 280
36 204
37 205
38 209
39 218
40 234
41 259
42 295
43 344
44 408
45 285
46 286
47 290
48 299
49 315
50 340
51 376
52 425
53 489
54 570

List of values

[0, 1, 2, 5, 6, 10, 14, 15, 19, 28, 30, 31, 35, 44, 60, 55, 56, 60, 69, 85, 110, 91, 92, 96, 105, 121, 146, 182, 140, 141, 145, 154, 170, 195, 231, 280, 204, 205, 209, 218, 234, 259, 295, 344, 408, 285, 286, 290, 299, 315, 340, 376, 425, 489, 570]

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

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