A300225 - cp's OEIS frontend

A300225 Filter sequence combining A296078(n) and A296091(n), the prime signatures of phi(n)+1 and sigma(n)-1, with a(1) = 1.

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

[1, 2, 2, 3, 2, 2, 2, 3, 4, 2, 2, 5, 2, 2, 6, 7, 2, 3, 2, 6, 2, 3, 2, 6, 8, 2, 3, 3, 2, 6, 2, 3, 9, 2, 6, 10, 2, 2, 11, 2, 2, 3, 2, 9, 11, 2, 2, 3, 12, 13, 9, 6, 2, 3, 2, 11, 2, 2, 2, 2, 2, 3, 2, 14, 6, 15, 2, 16, 17, 11, 2, 11, 2, 2, 3, 2, 3, 6, 2, 15, 18, 5, 2, 6, 9, 2, 15, 2, 2, 6, 3, 19, 2, 3, 3, 9, 2, 20, 3, 21, 2, 15, 2, 11, 6]

cp's OEIS Frontend

A300225 Filter sequence combining A296078(n) and A296091(n), the prime signatures of phi(n)+1 and sigma(n)-1, with a(1) = 1.

Table of values

List of values

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

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

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