A305893 - cp's OEIS frontend

A305893 Filter sequence combining 3-adic valuation (A007949) and the prime signature (A046523) of n.

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

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

cp's OEIS Frontend

A305893 Filter sequence combining 3-adic valuation (A007949) and the prime signature (A046523) of n.

Table of values

List of values

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

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

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