A327341 - cp's OEIS frontend

A327341 Denominators of the rationals r(n) = (1/n^2)*Phi_1(n), with Phi_1(n) = Sum{k=1..n} psi(k), with Dedekind's psi function.

n	a(n)
1	1
2	1
3	9
4	8
5	5
6	9
7	49
8	16
9	81
10	50
11	121
12	72
13	169
14	49
15	5
16	64
17	289
18	54
19	361
20	200
21	441
22	242
23	529
24	288
25	625
26	338
27	729
28	392
29	841
30	225
31	31
32	128
33	363
34	578
35	1225
36	216
37	1369
38	361
39	1521
40	40
41	1681
42	882
43	1849
44	968
45	75
46	1058
47	2209
48	128
49	2401

[1, 1, 9, 8, 5, 9, 49, 16, 81, 50, 121, 72, 169, 49, 5, 64, 289, 54, 361, 200, 441, 242, 529, 288, 625, 338, 729, 392, 841, 225, 31, 128, 363, 578, 1225, 216, 1369, 361, 1521, 40, 1681, 882, 1849, 968, 75, 1058, 2209, 128, 2401]

cp's OEIS Frontend

A327341 Denominators of the rationals r(n) = (1/n^2)*Phi_1(n), with Phi_1(n) = Sum{k=1..n} psi(k), with Dedekind's psi function.

Table of values

List of values