A305790 - cp's OEIS frontend

A305790 Filter-sequence combining prime signature of n (A046523) and similar signature obtained when (0,1)-polynomial encoded in the binary expansion of n is factored over Q (A304751).

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

[1, 2, 2, 3, 2, 4, 2, 5, 6, 4, 2, 7, 2, 4, 4, 8, 2, 9, 2, 7, 4, 4, 2, 10, 11, 4, 12, 7, 2, 13, 2, 14, 4, 4, 4, 15, 2, 4, 4, 10, 2, 13, 2, 7, 9, 4, 2, 16, 6, 17, 4, 7, 2, 18, 19, 10, 4, 4, 2, 20, 2, 4, 9, 21, 4, 13, 2, 7, 19, 13, 2, 22, 2, 4, 9, 7, 19, 13, 2, 16, 23, 4, 2, 20, 4, 4, 19, 10, 2, 24, 19, 7, 4, 4, 4, 25, 2, 9, 7, 26, 2, 13, 2, 10, 13]

cp's OEIS Frontend

A305790 Filter-sequence combining prime signature of n (A046523) and similar signature obtained when (0,1)-polynomial encoded in the binary expansion of n is factored over Q (A304751).

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

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

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