A344222 - cp's OEIS frontend

A344222 a(n) = Sum_{k=1..n} tau(gcd(k,n)^4), where tau(n) is the number of divisors of n.

n	a(n)
1	1
2	6
3	7
4	16
5	9
6	42
7	11
8	36
9	25
10	54
11	15
12	112
13	17
14	66
15	63
16	76
17	21
18	150
19	23
20	144
21	77
22	90
23	27
24	252
25	49
26	102
27	79
28	176
29	33
30	378
31	35
32	156
33	105
34	126
35	99
36	400
37	41
38	138
39	119
40	324
41	45
42	462
43	47
44	240
45	225
46	162
47	51
48	532
49	81
50	294
51	147
52	272
53	57
54	474
55	135
56	396
57	161
58	198
59	63
60	1008
61	65
62	210
63	275
64	316
65	153
66	630
67	71

[1, 6, 7, 16, 9, 42, 11, 36, 25, 54, 15, 112, 17, 66, 63, 76, 21, 150, 23, 144, 77, 90, 27, 252, 49, 102, 79, 176, 33, 378, 35, 156, 105, 126, 99, 400, 41, 138, 119, 324, 45, 462, 47, 240, 225, 162, 51, 532, 81, 294, 147, 272, 57, 474, 135, 396, 161, 198, 63, 1008, 65, 210, 275, 316, 153, 630, 71]

cp's OEIS Frontend

A344222 a(n) = Sum_{k=1..n} tau(gcd(k,n)^4), where tau(n) is the number of divisors of n.

Table of values

List of values