A341524 - cp's OEIS frontend

A341524 Number of prime factors in A017666(n), counted with multiplicity: a(n) = bigomega(n) - bigomega(gcd(n, sigma(n))).

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	0
7	1
8	3
9	2
10	1
11	1
12	1
13	1
14	1
15	1
16	4
17	1
18	2
19	1
20	2
21	2
22	1
23	1
24	1
25	2
26	1
27	3
28	0
29	1
30	1
31	1
32	5
33	1
34	1
35	2
36	4
37	1
38	1
39	2
40	2
41	1
42	1
43	1
44	1
45	2
46	1
47	1
48	3
49	2
50	3
51	1
52	2
53	1
54	2
55	2
56	1
57	2
58	1
59	1
60	1
61	1
62	1
63	3
64	6
65	2
66	1
67	1
68	2
69	1
70	2
71	1
72	4
73	1
74	1
75	3
76	1
77	2
78	1
79	1
80	4
81	4
82	1
83	1
84	1
85	2
86	1
87	1
88	2
89	1
90	1
91	1
92	1
93	2
94	1
95	1
96	3
97	1
98	3
99	2
100	4
101	1
102	1
103	1
104	3
105	2
106	1
107	1
108	3
109	1
110	2
111	2
112	2
113	1
114	1
115	2
116	2
117	2
118	1
119	2
120	0

[0, 1, 1, 2, 1, 0, 1, 3, 2, 1, 1, 1, 1, 1, 1, 4, 1, 2, 1, 2, 2, 1, 1, 1, 2, 1, 3, 0, 1, 1, 1, 5, 1, 1, 2, 4, 1, 1, 2, 2, 1, 1, 1, 1, 2, 1, 1, 3, 2, 3, 1, 2, 1, 2, 2, 1, 2, 1, 1, 1, 1, 1, 3, 6, 2, 1, 1, 2, 1, 2, 1, 4, 1, 1, 3, 1, 2, 1, 1, 4, 4, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 3, 1, 3, 2, 4, 1, 1, 1, 3, 2, 1, 1, 3, 1, 2, 2, 2, 1, 1, 2, 2, 2, 1, 2, 0]

cp's OEIS Frontend

A341524 Number of prime factors in A017666(n), counted with multiplicity: a(n) = bigomega(n) - bigomega(gcd(n, sigma(n))).

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	0
7	1
8	3
9	2
10	1
11	1
12	1
13	1
14	1
15	1
16	4
17	1
18	2
19	1
20	2
21	2
22	1
23	1
24	1
25	2
26	1
27	3
28	0
29	1
30	1
31	1
32	5
33	1
34	1
35	2
36	4
37	1
38	1
39	2
40	2
41	1
42	1
43	1
44	1
45	2
46	1
47	1
48	3
49	2
50	3
51	1
52	2
53	1
54	2
55	2
56	1
57	2
58	1
59	1
60	1
61	1
62	1
63	3
64	6
65	2
66	1
67	1
68	2
69	1
70	2
71	1
72	4
73	1
74	1
75	3
76	1
77	2
78	1
79	1
80	4
81	4
82	1
83	1
84	1
85	2
86	1
87	1
88	2
89	1
90	1
91	1
92	1
93	2
94	1
95	1
96	3
97	1
98	3
99	2
100	4
101	1
102	1
103	1
104	3
105	2
106	1
107	1
108	3
109	1
110	2
111	2
112	2
113	1
114	1
115	2
116	2
117	2
118	1
119	2
120	0

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	0
7	1
8	3
9	2
10	1
11	1
12	1
13	1
14	1
15	1
16	4
17	1
18	2
19	1
20	2
21	2
22	1
23	1
24	1
25	2
26	1
27	3
28	0
29	1
30	1
31	1
32	5
33	1
34	1
35	2
36	4
37	1
38	1
39	2
40	2
41	1
42	1
43	1
44	1
45	2
46	1
47	1
48	3
49	2
50	3
51	1
52	2
53	1
54	2
55	2
56	1
57	2
58	1
59	1
60	1
61	1
62	1
63	3
64	6
65	2
66	1
67	1
68	2
69	1
70	2
71	1
72	4
73	1
74	1
75	3
76	1
77	2
78	1
79	1
80	4
81	4
82	1
83	1
84	1
85	2
86	1
87	1
88	2
89	1
90	1
91	1
92	1
93	2
94	1
95	1
96	3
97	1
98	3
99	2
100	4
101	1
102	1
103	1
104	3
105	2
106	1
107	1
108	3
109	1
110	2
111	2
112	2
113	1
114	1
115	2
116	2
117	2
118	1
119	2
120	0

n	a(n)
1	0
2	1
3	1
4	2
5	1
6	0
7	1
8	3
9	2
10	1
11	1
12	1
13	1
14	1
15	1
16	4
17	1
18	2
19	1
20	2
21	2
22	1
23	1
24	1
25	2
26	1
27	3
28	0
29	1
30	1
31	1
32	5
33	1
34	1
35	2
36	4
37	1
38	1
39	2
40	2
41	1
42	1
43	1
44	1
45	2
46	1
47	1
48	3
49	2
50	3
51	1
52	2
53	1
54	2
55	2
56	1
57	2
58	1
59	1
60	1
61	1
62	1
63	3
64	6
65	2
66	1
67	1
68	2
69	1
70	2
71	1
72	4
73	1
74	1
75	3
76	1
77	2
78	1
79	1
80	4
81	4
82	1
83	1
84	1
85	2
86	1
87	1
88	2
89	1
90	1
91	1
92	1
93	2
94	1
95	1
96	3
97	1
98	3
99	2
100	4
101	1
102	1
103	1
104	3
105	2
106	1
107	1
108	3
109	1
110	2
111	2
112	2
113	1
114	1
115	2
116	2
117	2
118	1
119	2
120	0