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.

A271997 The icosagen sequence : a(n) = A018227(n)-5, for n >= 2.

Table of values

n a(n)
2 5
3 13
4 31
5 49
6 81
7 113
8 163
9 213
10 285
11 357
12 455
13 553
14 681
15 809
16 971
17 1133
18 1333
19 1533
20 1775
21 2017
22 2305
23 2593
24 2931
25 3269
26 3661
27 4053
28 4503
29 4953
30 5465
31 5977
32 6555
33 7133
34 7781
35 8429
36 9151
37 9873
38 10673
39 11473
40 12355
41 13237
42 14205
43 15173
44 16231
45 17289
46 18441

List of values

[5, 13, 31, 49, 81, 113, 163, 213, 285, 357, 455, 553, 681, 809, 971, 1133, 1333, 1533, 1775, 2017, 2305, 2593, 2931, 3269, 3661, 4053, 4503, 4953, 5465, 5977, 6555, 7133, 7781, 8429, 9151, 9873, 10673, 11473, 12355, 13237, 14205, 15173, 16231, 17289, 18441]