A319340 - cp's OEIS frontend

A319340 Sum of Euler totient function and its Dirichlet inverse: a(n) = A000010(n) + A023900(n).

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

[2, 0, 0, 1, 0, 4, 0, 3, 4, 8, 0, 6, 0, 12, 16, 7, 0, 8, 0, 12, 24, 20, 0, 10, 16, 24, 16, 18, 0, 0, 0, 15, 40, 32, 48, 14, 0, 36, 48, 20, 0, 0, 0, 30, 32, 44, 0, 18, 36, 24, 64, 36, 0, 20, 80, 30, 72, 56, 0, 8, 0, 60, 48, 31, 96, 0, 0, 48, 88, 0, 0, 26, 0, 72, 48, 54, 120, 0, 0, 36, 52, 80, 0, 12, 128, 84, 112, 50, 0, 16]

cp's OEIS Frontend

A319340 Sum of Euler totient function and its Dirichlet inverse: a(n) = A000010(n) + A023900(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	3
9	4
10	8
11	0
12	6
13	0
14	12
15	16
16	7
17	0
18	8
19	0
20	12
21	24
22	20
23	0
24	10
25	16
26	24
27	16
28	18
29	0
30	0
31	0
32	15
33	40
34	32
35	48
36	14
37	0
38	36
39	48
40	20
41	0
42	0
43	0
44	30
45	32
46	44
47	0
48	18
49	36
50	24
51	64
52	36
53	0
54	20
55	80
56	30
57	72
58	56
59	0
60	8
61	0
62	60
63	48
64	31
65	96
66	0
67	0
68	48
69	88
70	0
71	0
72	26
73	0
74	72
75	48
76	54
77	120
78	0
79	0
80	36
81	52
82	80
83	0
84	12
85	128
86	84
87	112
88	50
89	0
90	16

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

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