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.

A056108 Fourth spoke of a hexagonal spiral.

Table of values

n a(n)
0 1
1 5
2 15
3 31
4 53
5 81
6 115
7 155
8 201
9 253
10 311
11 375
12 445
13 521
14 603
15 691
16 785
17 885
18 991
19 1103
20 1221
21 1345
22 1475
23 1611
24 1753
25 1901
26 2055
27 2215
28 2381
29 2553
30 2731
31 2915
32 3105
33 3301
34 3503
35 3711
36 3925
37 4145
38 4371
39 4603
40 4841
41 5085
42 5335
43 5591
44 5853
45 6121
46 6395

List of values

[1, 5, 15, 31, 53, 81, 115, 155, 201, 253, 311, 375, 445, 521, 603, 691, 785, 885, 991, 1103, 1221, 1345, 1475, 1611, 1753, 1901, 2055, 2215, 2381, 2553, 2731, 2915, 3105, 3301, 3503, 3711, 3925, 4145, 4371, 4603, 4841, 5085, 5335, 5591, 5853, 6121, 6395]