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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.

A166306 Denominator of Bernoulli_n multiplied by the sum of the associated inverse primes in the Staudt-Clausen theorem, n=1, 2, 4, 6, 8, 10,...

Table of values

n a(n)
1 1
2 5
3 31
4 41
5 31
6 61
7 3421
8 5
9 557
10 821
11 371
12 121
13 3421
14 5
15 929
16 15745
17 557
18 5
19 2557843
20 5
21 15541
22 1805
23 743
24 241
25 60887
26 61
27 1673
28 821
29 929
30 301
31 79085411
32 5
33 557
34 66961
35 31
36 4397
37 188641729
38 5
39 31
40 3281
41 277727
42 421
43 4462547
44 5
45 66817
46 313477
47 1487
48 5
49 5952449
50 5

List of values

[1, 5, 31, 41, 31, 61, 3421, 5, 557, 821, 371, 121, 3421, 5, 929, 15745, 557, 5, 2557843, 5, 15541, 1805, 743, 241, 60887, 61, 1673, 821, 929, 301, 79085411, 5, 557, 66961, 31, 4397, 188641729, 5, 31, 3281, 277727, 421, 4462547, 5, 66817, 313477, 1487, 5, 5952449, 5]