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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.

A211021 Numbers n such that a new circle appears in the structure of A211000.

Table of values

n a(n)
1 11
2 13
3 15
4 34
5 41
6 65
7 71
8 75
9 275
10 281
11 285
12 437
13 443
14 561
15 567
16 575
17 581
18 591
19 597
20 605
21 611
22 617
23 647
24 663
25 957
26 971
27 1025
28 1037
29 1043
30 1055
31 1067
32 1073
33 1091
34 1113
35 1153
36 1165
37 1711
38 2243
39 3377
40 3467
41 5809
42 7937
43 7955
44 8021
45 8043
46 8057
47 8063

List of values

[11, 13, 15, 34, 41, 65, 71, 75, 275, 281, 285, 437, 443, 561, 567, 575, 581, 591, 597, 605, 611, 617, 647, 663, 957, 971, 1025, 1037, 1043, 1055, 1067, 1073, 1091, 1113, 1153, 1165, 1711, 2243, 3377, 3467, 5809, 7937, 7955, 8021, 8043, 8057, 8063]

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

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