cp's OEIS Frontend

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.

A378315 Odd numbers k such that d(phi(k)) = phi(d(k)), where d=A000005 and phi=A000010.

Table of values

n a(n)
1 1
2 15230439315
3 18887708385
4 74989937295
5 78103226565
6 86031400455
7 114958521405
8 179883837315
9 210096608085
10 367588711035
11 418094581905
12 461441147895
13 590648954805
14 649146021615
15 685787041485
16 836850895335
17 874197762165
18 990695282031
19 996070731201
20 1002913997085
21 1016370465201
22 1029306324501
23 1029869788311
24 1039854060045
25 1043905592457

List of values

[1, 15230439315, 18887708385, 74989937295, 78103226565, 86031400455, 114958521405, 179883837315, 210096608085, 367588711035, 418094581905, 461441147895, 590648954805, 649146021615, 685787041485, 836850895335, 874197762165, 990695282031, 996070731201, 1002913997085, 1016370465201, 1029306324501, 1029869788311, 1039854060045, 1043905592457]

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

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