A323408 - cp's OEIS frontend

A323408 Sum of unitary phi and its Dirichlet inverse: a(n) = A047994(n) + A323407(n).

n	a(n)
1	2
2	0
3	0
4	1
5	0
6	4
7	0
8	5
9	4
10	8
11	0
12	10
13	0
14	12
15	16
16	15
17	0
18	12
19	0
20	20
21	24
22	20
23	0
24	18
25	16
26	24
27	24
28	30
29	0
30	0
31	0
32	35
33	40
34	32
35	48
36	32
37	0
38	36
39	48
40	36
41	0
42	0
43	0
44	50
45	48
46	44
47	0
48	30
49	36
50	32
51	64
52	60
53	0
54	28
55	80
56	54
57	72
58	56
59	0
60	8
61	0
62	60
63	72
64	71
65	96
66	0
67	0
68	80
69	88
70	0
71	0
72	64
73	0
74	72
75	64
76	90
77	120
78	0
79	0
80	60
81	88
82	80
83	0
84	12
85	128
86	84
87	112
88	90
89	0
90	16
91	144
92	110
93	120

[2, 0, 0, 1, 0, 4, 0, 5, 4, 8, 0, 10, 0, 12, 16, 15, 0, 12, 0, 20, 24, 20, 0, 18, 16, 24, 24, 30, 0, 0, 0, 35, 40, 32, 48, 32, 0, 36, 48, 36, 0, 0, 0, 50, 48, 44, 0, 30, 36, 32, 64, 60, 0, 28, 80, 54, 72, 56, 0, 8, 0, 60, 72, 71, 96, 0, 0, 80, 88, 0, 0, 64, 0, 72, 64, 90, 120, 0, 0, 60, 88, 80, 0, 12, 128, 84, 112, 90, 0, 16, 144, 110, 120]

cp's OEIS Frontend

A323408 Sum of unitary phi and its Dirichlet inverse: a(n) = A047994(n) + A323407(n).

Table of values

List of values

n	a(n)
1	2
2	0
3	0
4	1
5	0
6	4
7	0
8	5
9	4
10	8
11	0
12	10
13	0
14	12
15	16
16	15
17	0
18	12
19	0
20	20
21	24
22	20
23	0
24	18
25	16
26	24
27	24
28	30
29	0
30	0
31	0
32	35
33	40
34	32
35	48
36	32
37	0
38	36
39	48
40	36
41	0
42	0
43	0
44	50
45	48
46	44
47	0
48	30
49	36
50	32
51	64
52	60
53	0
54	28
55	80
56	54
57	72
58	56
59	0
60	8
61	0
62	60
63	72
64	71
65	96
66	0
67	0
68	80
69	88
70	0
71	0
72	64
73	0
74	72
75	64
76	90
77	120
78	0
79	0
80	60
81	88
82	80
83	0
84	12
85	128
86	84
87	112
88	90
89	0
90	16
91	144
92	110
93	120

n	a(n)
1	2
2	0
3	0
4	1
5	0
6	4
7	0
8	5
9	4
10	8
11	0
12	10
13	0
14	12
15	16
16	15
17	0
18	12
19	0
20	20
21	24
22	20
23	0
24	18
25	16
26	24
27	24
28	30
29	0
30	0
31	0
32	35
33	40
34	32
35	48
36	32
37	0
38	36
39	48
40	36
41	0
42	0
43	0
44	50
45	48
46	44
47	0
48	30
49	36
50	32
51	64
52	60
53	0
54	28
55	80
56	54
57	72
58	56
59	0
60	8
61	0
62	60
63	72
64	71
65	96
66	0
67	0
68	80
69	88
70	0
71	0
72	64
73	0
74	72
75	64
76	90
77	120
78	0
79	0
80	60
81	88
82	80
83	0
84	12
85	128
86	84
87	112
88	90
89	0
90	16
91	144
92	110
93	120

n	a(n)
1	2
2	0
3	0
4	1
5	0
6	4
7	0
8	5
9	4
10	8
11	0
12	10
13	0
14	12
15	16
16	15
17	0
18	12
19	0
20	20
21	24
22	20
23	0
24	18
25	16
26	24
27	24
28	30
29	0
30	0
31	0
32	35
33	40
34	32
35	48
36	32
37	0
38	36
39	48
40	36
41	0
42	0
43	0
44	50
45	48
46	44
47	0
48	30
49	36
50	32
51	64
52	60
53	0
54	28
55	80
56	54
57	72
58	56
59	0
60	8
61	0
62	60
63	72
64	71
65	96
66	0
67	0
68	80
69	88
70	0
71	0
72	64
73	0
74	72
75	64
76	90
77	120
78	0
79	0
80	60
81	88
82	80
83	0
84	12
85	128
86	84
87	112
88	90
89	0
90	16
91	144
92	110
93	120