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.

A069128 Centered 15-gonal numbers: a(n) = (15*n^2 - 15*n + 2)/2.

Table of values

n a(n)
1 1
2 16
3 46
4 91
5 151
6 226
7 316
8 421
9 541
10 676
11 826
12 991
13 1171
14 1366
15 1576
16 1801
17 2041
18 2296
19 2566
20 2851
21 3151
22 3466
23 3796
24 4141
25 4501
26 4876
27 5266
28 5671
29 6091
30 6526
31 6976
32 7441
33 7921
34 8416
35 8926
36 9451
37 9991
38 10546
39 11116
40 11701
41 12301
42 12916
43 13546
44 14191
45 14851
46 15526

List of values

[1, 16, 46, 91, 151, 226, 316, 421, 541, 676, 826, 991, 1171, 1366, 1576, 1801, 2041, 2296, 2566, 2851, 3151, 3466, 3796, 4141, 4501, 4876, 5266, 5671, 6091, 6526, 6976, 7441, 7921, 8416, 8926, 9451, 9991, 10546, 11116, 11701, 12301, 12916, 13546, 14191, 14851, 15526]

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

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