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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.

A078776 Numbers k such that phi(k-1) < phi(k) < phi(k+1), where phi is the Euler totient function (A000010).

Table of values

n a(n)
1 106
2 166
3 316
4 526
5 586
6 736
7 1156
8 1366
9 1485
10 1486
11 1576
12 1756
13 1786
14 1816
15 1996
16 2146
17 2206
18 2416
19 2476
20 2535
21 2536
22 2806
23 2836
24 3003
25 3004
26 3046
27 3316
28 3466
29 3675
30 3676
31 3886
32 3927
33 3928
34 4096
35 4126
36 4306
37 4455
38 4456
39 4485
40 4486
41 4516
42 4726
43 4785
44 4786

List of values

[106, 166, 316, 526, 586, 736, 1156, 1366, 1485, 1486, 1576, 1756, 1786, 1816, 1996, 2146, 2206, 2416, 2476, 2535, 2536, 2806, 2836, 3003, 3004, 3046, 3316, 3466, 3675, 3676, 3886, 3927, 3928, 4096, 4126, 4306, 4455, 4456, 4485, 4486, 4516, 4726, 4785, 4786]

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

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