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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.

A330429 Numbers k such that phi(k) = phi(k+9), where phi (A000010) is Euler's totient function.

Table of values

n a(n)
1 9
2 15
3 1005079920836
4 13695542245376
5 26160864154416
6 27402841561095
7 27599063056565
8 110263115897935
9 124632211478775
10 127400054266476
11 154090744843026
12 205849483744896
13 231019991767556
14 339938754880725
15 459718637643265
16 632733228632505
17 646552697065275
18 683008674773416
19 884965354448175

List of values

[9, 15, 1005079920836, 13695542245376, 26160864154416, 27402841561095, 27599063056565, 110263115897935, 124632211478775, 127400054266476, 154090744843026, 205849483744896, 231019991767556, 339938754880725, 459718637643265, 632733228632505, 646552697065275, 683008674773416, 884965354448175]

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

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