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.

A195147 Concentric 18-gonal numbers.

Table of values

n a(n)
0 0
1 1
2 18
3 37
4 72
5 109
6 162
7 217
8 288
9 361
10 450
11 541
12 648
13 757
14 882
15 1009
16 1152
17 1297
18 1458
19 1621
20 1800
21 1981
22 2178
23 2377
24 2592
25 2809
26 3042
27 3277
28 3528
29 3781
30 4050
31 4321
32 4608
33 4897
34 5202
35 5509
36 5832
37 6157
38 6498
39 6841
40 7200
41 7561
42 7938
43 8317
44 8712
45 9109

List of values

[0, 1, 18, 37, 72, 109, 162, 217, 288, 361, 450, 541, 648, 757, 882, 1009, 1152, 1297, 1458, 1621, 1800, 1981, 2178, 2377, 2592, 2809, 3042, 3277, 3528, 3781, 4050, 4321, 4608, 4897, 5202, 5509, 5832, 6157, 6498, 6841, 7200, 7561, 7938, 8317, 8712, 9109]