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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.

A116027 Numbers k such that k + phi(k) + phi(phi(k)) is a repdigit.

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 14
8 23
9 28
10 45
11 51
12 55
13 56
14 63
15 161
16 189
17 275
18 543
19 567
20 1373
21 13499
22 13642
23 25963
24 27284
25 54568
26 135347
27 138587
28 304779
29 1296346
30 2592692
31 5185384
32 45994399
33 338193377
34 419192721
35 1492937222
36 1724137953
37 2453038739
38 2985874444
39 4687039999

List of values

[1, 2, 3, 4, 5, 6, 14, 23, 28, 45, 51, 55, 56, 63, 161, 189, 275, 543, 567, 1373, 13499, 13642, 25963, 27284, 54568, 135347, 138587, 304779, 1296346, 2592692, 5185384, 45994399, 338193377, 419192721, 1492937222, 1724137953, 2453038739, 2985874444, 4687039999]

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

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