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.

A129863 Sums of three consecutive pentagonal numbers.

Table of values

n a(n)
0 6
1 18
2 39
3 69
4 108
5 156
6 213
7 279
8 354
9 438
10 531
11 633
12 744
13 864
14 993
15 1131
16 1278
17 1434
18 1599
19 1773
20 1956
21 2148
22 2349
23 2559
24 2778
25 3006
26 3243
27 3489
28 3744
29 4008
30 4281
31 4563
32 4854
33 5154
34 5463
35 5781
36 6108
37 6444
38 6789
39 7143
40 7506
41 7878
42 8259
43 8649
44 9048
45 9456
46 9873

List of values

[6, 18, 39, 69, 108, 156, 213, 279, 354, 438, 531, 633, 744, 864, 993, 1131, 1278, 1434, 1599, 1773, 1956, 2148, 2349, 2559, 2778, 3006, 3243, 3489, 3744, 4008, 4281, 4563, 4854, 5154, 5463, 5781, 6108, 6444, 6789, 7143, 7506, 7878, 8259, 8649, 9048, 9456, 9873]