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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.

A118695 Semiprimes which are divisible by their digital root.

Table of values

n a(n)
1 4
2 6
3 9
4 10
5 21
6 38
7 39
8 46
9 55
10 57
11 74
12 82
13 91
14 93
15 95
16 111
17 118
18 129
19 133
20 145
21 146
22 183
23 185
24 201
25 217
26 218
27 219
28 226
29 235
30 237
31 253
32 254
33 259
34 262
35 289
36 291
37 298
38 309
39 326
40 327
41 334
42 361
43 362
44 365
45 381
46 398
47 415
48 417
49 451
50 453
51 469
52 471
53 478
54 489
55 505
56 511
57 514
58 542
59 543

List of values

[4, 6, 9, 10, 21, 38, 39, 46, 55, 57, 74, 82, 91, 93, 95, 111, 118, 129, 133, 145, 146, 183, 185, 201, 217, 218, 219, 226, 235, 237, 253, 254, 259, 262, 289, 291, 298, 309, 326, 327, 334, 361, 362, 365, 381, 398, 415, 417, 451, 453, 469, 471, 478, 489, 505, 511, 514, 542, 543]

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

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