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.

A001318 Generalized pentagonal numbers: m*(3*m - 1)/2, m = 0, +-1, +-2, +-3, ....

Table of values

n a(n)
0 0
1 1
2 2
3 5
4 7
5 12
6 15
7 22
8 26
9 35
10 40
11 51
12 57
13 70
14 77
15 92
16 100
17 117
18 126
19 145
20 155
21 176
22 187
23 210
24 222
25 247
26 260
27 287
28 301
29 330
30 345
31 376
32 392
33 425
34 442
35 477
36 495
37 532
38 551
39 590
40 610
41 651
42 672
43 715
44 737
45 782
46 805
47 852
48 876
49 925
50 950
51 1001
52 1027
53 1080
54 1107
55 1162
56 1190
57 1247
58 1276
59 1335

List of values

[0, 1, 2, 5, 7, 12, 15, 22, 26, 35, 40, 51, 57, 70, 77, 92, 100, 117, 126, 145, 155, 176, 187, 210, 222, 247, 260, 287, 301, 330, 345, 376, 392, 425, 442, 477, 495, 532, 551, 590, 610, 651, 672, 715, 737, 782, 805, 852, 876, 925, 950, 1001, 1027, 1080, 1107, 1162, 1190, 1247, 1276, 1335]

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

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