A372999 - cp's OEIS frontend

A372999 a(n) = Sum_{k=1..n} tau( (n/gcd(k,n))^4 ).

n	a(n)
1	1
2	6
3	11
4	24
5	21
6	66
7	31
8	76
9	65
10	126
11	51
12	264
13	61
14	186
15	231
16	212
17	81
18	390
19	91
20	504
21	341
22	306
23	111
24	836
25	201
26	366
27	299
28	744
29	141
30	1386
31	151
32	548
33	561
34	486
35	651
36	1560
37	181
38	546
39	671
40	1596
41	201
42	2046
43	211
44	1224
45	1365
46	666
47	231
48	2332
49	409
50	1206
51	891
52	1464
53	261
54	1794

[1, 6, 11, 24, 21, 66, 31, 76, 65, 126, 51, 264, 61, 186, 231, 212, 81, 390, 91, 504, 341, 306, 111, 836, 201, 366, 299, 744, 141, 1386, 151, 548, 561, 486, 651, 1560, 181, 546, 671, 1596, 201, 2046, 211, 1224, 1365, 666, 231, 2332, 409, 1206, 891, 1464, 261, 1794]

cp's OEIS Frontend

A372999 a(n) = Sum_{k=1..n} tau( (n/gcd(k,n))^4 ).

Table of values

List of values