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.

A273286 Positive integers n such that n=p+q for some primes p,q with pi(p)*pi(q) = sigma(n).

Table of values

n a(n)
1 92
2 130
3 132
4 136
5 154
6 270
7 286
8 384
9 398
10 456
11 546
12 608
13 630
14 636
15 702
16 934
17 944
18 2730
19 4394
20 4470
21 4556
22 5544
23 12084
24 14320
25 17572
26 22632
27 27808
28 27930
29 31150
30 31284
31 32534
32 36346
33 41004
34 41544
35 42274
36 56916
37 58552
38 61680
39 66654
40 74826
41 86200

List of values

[92, 130, 132, 136, 154, 270, 286, 384, 398, 456, 546, 608, 630, 636, 702, 934, 944, 2730, 4394, 4470, 4556, 5544, 12084, 14320, 17572, 22632, 27808, 27930, 31150, 31284, 32534, 36346, 41004, 41544, 42274, 56916, 58552, 61680, 66654, 74826, 86200]

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

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