A300240 - cp's OEIS frontend

A300240 Filter sequence combining A009195(n) and A046523(n), i.e., gcd(n,phi(n)) and the prime signature of n.

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

[1, 2, 2, 3, 2, 4, 2, 5, 6, 4, 2, 7, 2, 4, 8, 9, 2, 10, 2, 7, 11, 4, 2, 12, 13, 4, 14, 7, 2, 15, 2, 16, 8, 4, 8, 17, 2, 4, 11, 12, 2, 18, 2, 7, 19, 4, 2, 20, 21, 22, 8, 7, 2, 23, 24, 12, 11, 4, 2, 25, 2, 4, 26, 27, 8, 15, 2, 7, 8, 15, 2, 28, 2, 4, 29, 7, 8, 18, 2, 20, 30, 4, 2, 31, 8, 4, 8, 12, 2, 32, 8, 7, 11, 4, 8, 33, 2, 34, 19, 35, 2, 15, 2, 12, 36]

cp's OEIS Frontend

A300240 Filter sequence combining A009195(n) and A046523(n), i.e., gcd(n,phi(n)) and the prime signature of n.

Table of values

List of values

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

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

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