A337198 - cp's OEIS frontend

A337198 Number of distinct prime factors in A337194(n) = 1+A000265(sigma(n)), where A000265(k) gives the odd part of k.

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

[1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 1, 2, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 2, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 2, 2, 1, 1, 2, 2, 2, 2, 2, 1, 2, 1, 2, 2, 2, 2, 1, 2, 1, 2, 2, 1, 2, 2, 2, 1, 2, 1, 2, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1]

cp's OEIS Frontend

A337198 Number of distinct prime factors in A337194(n) = 1+A000265(sigma(n)), where A000265(k) gives the odd part of k.

Table of values

List of values

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

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

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