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.

A045945 Hexagonal matchstick numbers: a(n) = 3*n*(3*n+1).

Table of values

n a(n)
0 0
1 12
2 42
3 90
4 156
5 240
6 342
7 462
8 600
9 756
10 930
11 1122
12 1332
13 1560
14 1806
15 2070
16 2352
17 2652
18 2970
19 3306
20 3660
21 4032
22 4422
23 4830
24 5256
25 5700
26 6162
27 6642
28 7140
29 7656
30 8190
31 8742
32 9312
33 9900
34 10506
35 11130
36 11772
37 12432
38 13110
39 13806
40 14520
41 15252
42 16002
43 16770
44 17556

List of values

[0, 12, 42, 90, 156, 240, 342, 462, 600, 756, 930, 1122, 1332, 1560, 1806, 2070, 2352, 2652, 2970, 3306, 3660, 4032, 4422, 4830, 5256, 5700, 6162, 6642, 7140, 7656, 8190, 8742, 9312, 9900, 10506, 11130, 11772, 12432, 13110, 13806, 14520, 15252, 16002, 16770, 17556]

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

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