A322165 - cp's OEIS frontend

A322165 Numbers k that give record values for s(k)*phi(k)/k^2, where s(k) is the sum of squares of the differences between consecutive totatives of k (A322144).

n	a(n)
1	1
2	3
3	4
4	6
5	10
6	12
7	15
8	18
9	20
10	21
11	30
12	42
13	60
14	70
15	105
16	210
17	385
18	770
19	1155
20	2310
21	4620
22	5005
23	10010
24	15015
25	30030
26	60060
27	90090
28	120120
29	150150
30	180180
31	210210
32	240240
33	255255
34	510510

[1, 3, 4, 6, 10, 12, 15, 18, 20, 21, 30, 42, 60, 70, 105, 210, 385, 770, 1155, 2310, 4620, 5005, 10010, 15015, 30030, 60060, 90090, 120120, 150150, 180180, 210210, 240240, 255255, 510510]

cp's OEIS Frontend

A322165 Numbers k that give record values for s(k)*phi(k)/k^2, where s(k) is the sum of squares of the differences between consecutive totatives of k (A322144).

Table of values

List of values