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.

A298156 Composite numbers n of which the sum of prime divisors of n (with repetition) equals the concatenation of two integers k and k + 1.

Table of values

n a(n)
1 35
2 42
3 50
4 60
5 64
6 72
7 76
8 81
9 86
10 93
11 136
12 145
13 153
14 159
15 164
16 174
17 253
18 273
19 289
20 325
21 365
22 385
23 390
24 416
25 438
26 462
27 468
28 488
29 494
30 497
31 549
32 550
33 555
34 559
35 592
36 644
37 658
38 660
39 664
40 666
41 686
42 703
43 704
44 710
45 737
46 747
47 792
48 836
49 852
50 884
51 885
52 891
53 920
54 940
55 944
56 946
57 980

List of values

[35, 42, 50, 60, 64, 72, 76, 81, 86, 93, 136, 145, 153, 159, 164, 174, 253, 273, 289, 325, 365, 385, 390, 416, 438, 462, 468, 488, 494, 497, 549, 550, 555, 559, 592, 644, 658, 660, 664, 666, 686, 703, 704, 710, 737, 747, 792, 836, 852, 884, 885, 891, 920, 940, 944, 946, 980]

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

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