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.

A122061 First pentagonal number, 2nd hexagonal number, 3rd heptagonal number, 4th octagonal number and then repeat the same pattern: 5th pentagonal, 6th hexagonal, 7th heptagonal, 8th octagonal, etc.

Table of values

n a(n)
1 1
2 6
3 18
4 40
5 35
6 66
7 112
8 176
9 117
10 190
11 286
12 408
13 247
14 378
15 540
16 736
17 425
18 630
19 874
20 1160
21 651
22 946
23 1288
24 1680
25 925
26 1326
27 1782
28 2296
29 1247
30 1770
31 2356
32 3008
33 1617
34 2278
35 3010
36 3816
37 2035
38 2850
39 3744
40 4720
41 2501
42 3486
43 4558
44 5720
45 3015
46 4186
47 5452

List of values

[1, 6, 18, 40, 35, 66, 112, 176, 117, 190, 286, 408, 247, 378, 540, 736, 425, 630, 874, 1160, 651, 946, 1288, 1680, 925, 1326, 1782, 2296, 1247, 1770, 2356, 3008, 1617, 2278, 3010, 3816, 2035, 2850, 3744, 4720, 2501, 3486, 4558, 5720, 3015, 4186, 5452]