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.

A081766 Numbers k such that k^2+1 divides C(2k,k).

Table of values

n a(n)
1 0
2 1
3 3
4 8
5 13
6 17
7 30
8 46
9 47
10 68
11 73
12 75
13 93
14 98
15 105
16 112
17 122
18 144
19 155
20 172
21 183
22 189
23 192
24 203
25 217
26 233
27 237
28 242
29 254
30 266
31 268
32 269
33 278
34 286
35 294
36 348
37 380
38 401
39 403
40 411
41 423
42 437
43 439
44 443
45 456
46 463
47 476
48 483
49 489
50 494
51 498
52 511
53 520
54 526
55 540
56 563

List of values

[0, 1, 3, 8, 13, 17, 30, 46, 47, 68, 73, 75, 93, 98, 105, 112, 122, 144, 155, 172, 183, 189, 192, 203, 217, 233, 237, 242, 254, 266, 268, 269, 278, 286, 294, 348, 380, 401, 403, 411, 423, 437, 439, 443, 456, 463, 476, 483, 489, 494, 498, 511, 520, 526, 540, 563]