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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.

A055999 a(n) = n*(n + 7)/2.

Table of values

n a(n)
0 0
1 4
2 9
3 15
4 22
5 30
6 39
7 49
8 60
9 72
10 85
11 99
12 114
13 130
14 147
15 165
16 184
17 204
18 225
19 247
20 270
21 294
22 319
23 345
24 372
25 400
26 429
27 459
28 490
29 522
30 555
31 589
32 624
33 660
34 697
35 735
36 774
37 814
38 855
39 897
40 940
41 984
42 1029
43 1075
44 1122
45 1170
46 1219
47 1269
48 1320
49 1372
50 1425
51 1479

List of values

[0, 4, 9, 15, 22, 30, 39, 49, 60, 72, 85, 99, 114, 130, 147, 165, 184, 204, 225, 247, 270, 294, 319, 345, 372, 400, 429, 459, 490, 522, 555, 589, 624, 660, 697, 735, 774, 814, 855, 897, 940, 984, 1029, 1075, 1122, 1170, 1219, 1269, 1320, 1372, 1425, 1479]

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

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