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.

A154367 Numbers k such that the sum of the prime factors of composite(k) (with multiplicity) is prime and lpf(composite(k)) + gpf(composite(k)) is composite.

Table of values

n a(n)
1 18
2 30
3 36
4 39
5 44
6 53
7 54
8 73
9 76
10 86
11 112
12 113
13 116
14 126
15 132
16 134
17 141
18 160
19 163
20 175
21 191
22 194
23 197
24 211
25 214
26 219
27 231
28 233
29 250
30 258
31 265
32 276
33 279
34 294
35 295
36 301
37 308
38 311
39 312
40 320
41 325
42 331
43 333
44 335
45 338
46 340
47 341
48 350
49 351
50 361
51 376
52 383
53 385
54 394

List of values

[18, 30, 36, 39, 44, 53, 54, 73, 76, 86, 112, 113, 116, 126, 132, 134, 141, 160, 163, 175, 191, 194, 197, 211, 214, 219, 231, 233, 250, 258, 265, 276, 279, 294, 295, 301, 308, 311, 312, 320, 325, 331, 333, 335, 338, 340, 341, 350, 351, 361, 376, 383, 385, 394]

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

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