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.

A328859 Indices k of records of low value in the ratios A319696(k)/A000005(k) between the number of distinct values of the Euler totient function applied to the divisors of k and the number of divisors of k.

Table of values

n a(n)
1 1
2 2
3 60
4 120
5 240
6 480
7 960
8 1920
9 3840
10 4080
11 8160
12 16320
13 32640
14 65280
15 130560
16 261120
17 522240
18 1044480
19 1485120
20 2227680
21 2970240
22 4455360
23 8910720
24 17821440
25 35642880
26 42325920
27 63488880
28 69090840
29 84651840
30 126977760
31 169303680
32 253955520
33 507911040
34 761866560

List of values

[1, 2, 60, 120, 240, 480, 960, 1920, 3840, 4080, 8160, 16320, 32640, 65280, 130560, 261120, 522240, 1044480, 1485120, 2227680, 2970240, 4455360, 8910720, 17821440, 35642880, 42325920, 63488880, 69090840, 84651840, 126977760, 169303680, 253955520, 507911040, 761866560]