A161961 - cp's OEIS frontend

A161961 Denominator of ratio in lowest terms of pi(n^2)/(n*pi(n)), where pi(x) = A000720(x).

n	a(n)
2	1
3	3
4	4
5	5
6	18
7	28
8	16
9	18
10	8
11	11
12	30
13	2
14	21
15	15
16	16
17	119
18	21
19	19
20	80
21	168
22	44
23	23
24	72
25	75
26	117
27	81
28	252
29	145
30	150
31	341
32	88
33	363
34	374
35	77
36	66
37	148
38	2
39	39
40	480
41	533
42	273
43	602
44	616
45	35
46	644
47	15
48	40
49	35
50	750
51	85
52	260
53	848
54	864
55	440
56	896
57	912
58	464
59	1003
60	1020
61	366
62	279
63	126
64	96
65	585

[1, 3, 4, 5, 18, 28, 16, 18, 8, 11, 30, 2, 21, 15, 16, 119, 21, 19, 80, 168, 44, 23, 72, 75, 117, 81, 252, 145, 150, 341, 88, 363, 374, 77, 66, 148, 2, 39, 480, 533, 273, 602, 616, 35, 644, 15, 40, 35, 750, 85, 260, 848, 864, 440, 896, 912, 464, 1003, 1020, 366, 279, 126, 96, 585]

cp's OEIS Frontend

A161961 Denominator of ratio in lowest terms of pi(n^2)/(n*pi(n)), where pi(x) = A000720(x).

Table of values

List of values