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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.

A348657 Numbers k such that k and k+1 have the same denominator of the harmonic means of their unitary divisors.

Table of values

n a(n)
1 266
2 321
3 1015
4 2544
5 4004
6 4277
7 5016
8 15861
9 28461
10 47613
11 63546
12 135078
13 137333
14 203709
15 207024
16 265489
17 344217
18 383466
19 517610
20 603687
21 787156
22 798625
23 876469
24 1100835
25 1713865
26 2062863
27 2246923
28 2349390
29 2666741
30 3013830
31 3961129
32 5048409
33 6148960
34 6491717

List of values

[266, 321, 1015, 2544, 4004, 4277, 5016, 15861, 28461, 47613, 63546, 135078, 137333, 203709, 207024, 265489, 344217, 383466, 517610, 603687, 787156, 798625, 876469, 1100835, 1713865, 2062863, 2246923, 2349390, 2666741, 3013830, 3961129, 5048409, 6148960, 6491717]

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

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