A344683 - cp's OEIS frontend

A344683 Dirichlet convolution of the Euler totient function with itself, applied twice.

n	a(n)
1	1
2	3
3	6
4	9
5	12
6	18
7	18
8	25
9	30
10	36
11	30
12	54
13	36
14	54
15	72
16	66
17	48
18	90
19	54
20	108
21	108
22	90
23	66
24	150
25	108
26	108
27	134
28	162
29	84
30	216
31	90
32	168
33	180
34	144
35	216
36	270
37	108
38	162
39	216
40	300
41	120
42	324
43	126
44	270
45	360
46	198
47	138
48	396
49	234
50	324
51	288
52	324
53	156
54	402
55	360
56	450
57	324

[1, 3, 6, 9, 12, 18, 18, 25, 30, 36, 30, 54, 36, 54, 72, 66, 48, 90, 54, 108, 108, 90, 66, 150, 108, 108, 134, 162, 84, 216, 90, 168, 180, 144, 216, 270, 108, 162, 216, 300, 120, 324, 126, 270, 360, 198, 138, 396, 234, 324, 288, 324, 156, 402, 360, 450, 324]

cp's OEIS Frontend

A344683 Dirichlet convolution of the Euler totient function with itself, applied twice.

Table of values

List of values

n	a(n)
1	1
2	3
3	6
4	9
5	12
6	18
7	18
8	25
9	30
10	36
11	30
12	54
13	36
14	54
15	72
16	66
17	48
18	90
19	54
20	108
21	108
22	90
23	66
24	150
25	108
26	108
27	134
28	162
29	84
30	216
31	90
32	168
33	180
34	144
35	216
36	270
37	108
38	162
39	216
40	300
41	120
42	324
43	126
44	270
45	360
46	198
47	138
48	396
49	234
50	324
51	288
52	324
53	156
54	402
55	360
56	450
57	324

n	a(n)
1	1
2	3
3	6
4	9
5	12
6	18
7	18
8	25
9	30
10	36
11	30
12	54
13	36
14	54
15	72
16	66
17	48
18	90
19	54
20	108
21	108
22	90
23	66
24	150
25	108
26	108
27	134
28	162
29	84
30	216
31	90
32	168
33	180
34	144
35	216
36	270
37	108
38	162
39	216
40	300
41	120
42	324
43	126
44	270
45	360
46	198
47	138
48	396
49	234
50	324
51	288
52	324
53	156
54	402
55	360
56	450
57	324

n	a(n)
1	1
2	3
3	6
4	9
5	12
6	18
7	18
8	25
9	30
10	36
11	30
12	54
13	36
14	54
15	72
16	66
17	48
18	90
19	54
20	108
21	108
22	90
23	66
24	150
25	108
26	108
27	134
28	162
29	84
30	216
31	90
32	168
33	180
34	144
35	216
36	270
37	108
38	162
39	216
40	300
41	120
42	324
43	126
44	270
45	360
46	198
47	138
48	396
49	234
50	324
51	288
52	324
53	156
54	402
55	360
56	450
57	324