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.

A143407 Largest number k such that the reduced totient function psi(k) = A002174(n).

Table of values

n a(n)
1 2
2 24
3 240
4 504
5 480
6 264
7 65520
8 16320
9 28728
10 13200
11 552
12 131040
13 6960
14 171864
15 32640
16 138181680
17 1082400
18 151704
19 5520
20 1128
21 4455360
22 12720
23 86184
24 13920
25 1416
26 6814407600
27 65280
28 776664
29 18744
30 20174525280
31 39816
32 36801600
33 1992

List of values

[2, 24, 240, 504, 480, 264, 65520, 16320, 28728, 13200, 552, 131040, 6960, 171864, 32640, 138181680, 1082400, 151704, 5520, 1128, 4455360, 12720, 86184, 13920, 1416, 6814407600, 65280, 776664, 18744, 20174525280, 39816, 36801600, 1992]

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

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