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.

A167706 The single or isolated numbers. The union of single (or isolated or non-twin) primes and single (or isolated or average of twin prime pairs) nonprimes.

Table of values

n a(n)
1 2
2 4
3 6
4 12
5 18
6 23
7 30
8 37
9 42
10 47
11 53
12 60
13 67
14 72
15 79
16 83
17 89
18 97
19 102
20 108
21 113
22 127
23 131
24 138
25 150
26 157
27 163
28 167
29 173
30 180
31 192
32 198
33 211
34 223
35 228
36 233
37 240
38 251
39 257
40 263
41 270
42 277
43 282
44 293
45 307
46 312
47 317
48 331
49 337
50 348
51 353
52 359
53 367
54 373
55 379
56 383
57 389

List of values

[2, 4, 6, 12, 18, 23, 30, 37, 42, 47, 53, 60, 67, 72, 79, 83, 89, 97, 102, 108, 113, 127, 131, 138, 150, 157, 163, 167, 173, 180, 192, 198, 211, 223, 228, 233, 240, 251, 257, 263, 270, 277, 282, 293, 307, 312, 317, 331, 337, 348, 353, 359, 367, 373, 379, 383, 389]

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

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