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.

A007587 12-gonal (or dodecagonal) pyramidal numbers: a(n) = n*(n+1)*(10*n-7)/6.

Table of values

n a(n)
0 0
1 1
2 13
3 46
4 110
5 215
6 371
7 588
8 876
9 1245
10 1705
11 2266
12 2938
13 3731
14 4655
15 5720
16 6936
17 8313
18 9861
19 11590
20 13510
21 15631
22 17963
23 20516
24 23300
25 26325
26 29601
27 33138
28 36946
29 41035
30 45415
31 50096
32 55088
33 60401
34 66045
35 72030
36 78366
37 85063
38 92131
39 99580
40 107420
41 115661

List of values

[0, 1, 13, 46, 110, 215, 371, 588, 876, 1245, 1705, 2266, 2938, 3731, 4655, 5720, 6936, 8313, 9861, 11590, 13510, 15631, 17963, 20516, 23300, 26325, 29601, 33138, 36946, 41035, 45415, 50096, 55088, 60401, 66045, 72030, 78366, 85063, 92131, 99580, 107420, 115661]