A055654 - cp's OEIS frontend

A055654 Difference between n and the result of "Phi-summation" over unitary divisors of n.

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

[0, 0, 0, 1, 0, 0, 0, 3, 2, 0, 0, 3, 0, 0, 0, 7, 0, 4, 0, 5, 0, 0, 0, 9, 4, 0, 8, 7, 0, 0, 0, 15, 0, 0, 0, 15, 0, 0, 0, 15, 0, 0, 0, 11, 10, 0, 0, 21, 6, 8, 0, 13, 0, 16, 0, 21, 0, 0, 0, 15, 0, 0, 14, 31, 0, 0, 0, 17, 0, 0, 0, 37, 0, 0, 12, 19, 0, 0, 0, 35, 26, 0, 0, 21, 0, 0, 0, 33, 0, 20, 0, 23]

cp's OEIS Frontend

A055654 Difference between n and the result of "Phi-summation" over unitary divisors of n.

Table of values

List of values

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

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

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