A306264 - cp's OEIS frontend

A306264 a(n) = 1 + d*a(n/d); a(1)=0. If n has only one prime divisor, then d=n, otherwise d is the greatest proper unitary divisor of n.

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

[0, 1, 1, 1, 1, 4, 1, 1, 1, 6, 1, 5, 1, 8, 6, 1, 1, 10, 1, 6, 8, 12, 1, 9, 1, 14, 1, 8, 1, 16, 1, 1, 12, 18, 8, 10, 1, 20, 14, 9, 1, 22, 1, 12, 10, 24, 1, 17, 1, 26, 18, 14, 1, 28, 12, 9, 20, 30, 1, 21, 1, 32, 10, 1, 14, 34, 1, 18, 24, 36, 1, 10, 1, 38, 26, 20, 12, 40, 1, 17]

cp's OEIS Frontend

A306264 a(n) = 1 + d*a(n/d); a(1)=0. If n has only one prime divisor, then d=n, otherwise d is the greatest proper unitary divisor of n.

Table of values

List of values

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

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

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