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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.

A140390 Nonprimes of the form 21k+1.

Table of values

n a(n)
1 1
2 22
3 64
4 85
5 106
6 148
7 169
8 190
9 232
10 253
11 274
12 295
13 316
14 358
15 400
16 442
17 484
18 505
19 526
20 568
21 589
22 610
23 652
24 694
25 715
26 736
27 778
28 799
29 820
30 841
31 862
32 904
33 925
34 946
35 988
36 1030
37 1072
38 1114
39 1135
40 1156
41 1177
42 1198
43 1219
44 1240
45 1261
46 1282
47 1324

List of values

[1, 22, 64, 85, 106, 148, 169, 190, 232, 253, 274, 295, 316, 358, 400, 442, 484, 505, 526, 568, 589, 610, 652, 694, 715, 736, 778, 799, 820, 841, 862, 904, 925, 946, 988, 1030, 1072, 1114, 1135, 1156, 1177, 1198, 1219, 1240, 1261, 1282, 1324]

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

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