A300246 - cp's OEIS frontend

A300246 Filter sequence combining A046523(n) and A078899(n), the prime signature of n and the number of times the greatest prime factor of n is the greatest prime factor for numbers <= 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	8
22	4
23	2
24	11
25	12
26	4
27	13
28	7
29	2
30	14
31	2
32	15
33	8
34	4
35	16
36	17
37	2
38	4
39	8
40	18
41	2
42	14
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	16
56	24
57	8
58	4
59	2
60	25
61	2
62	4
63	22
64	26
65	16
66	14
67	2
68	7
69	8
70	27
71	2
72	28
73	2
74	4
75	29
76	7
77	30
78	14
79	2
80	31
81	32
82	4
83	2
84	33
85	16
86	4
87	8
88	24
89	2
90	34
91	30
92	7
93	8
94	4
95	16
96	35
97	2
98	36
99	22
100	37
101	2
102	14
103	2
104	24
105	38

[1, 2, 2, 3, 2, 4, 2, 5, 6, 4, 2, 7, 2, 4, 8, 9, 2, 10, 2, 7, 8, 4, 2, 11, 12, 4, 13, 7, 2, 14, 2, 15, 8, 4, 16, 17, 2, 4, 8, 18, 2, 14, 2, 7, 19, 4, 2, 20, 21, 22, 8, 7, 2, 23, 16, 24, 8, 4, 2, 25, 2, 4, 22, 26, 16, 14, 2, 7, 8, 27, 2, 28, 2, 4, 29, 7, 30, 14, 2, 31, 32, 4, 2, 33, 16, 4, 8, 24, 2, 34, 30, 7, 8, 4, 16, 35, 2, 36, 22, 37, 2, 14, 2, 24, 38]

cp's OEIS Frontend

A300246 Filter sequence combining A046523(n) and A078899(n), the prime signature of n and the number of times the greatest prime factor of n is the greatest prime factor for numbers <= 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	8
22	4
23	2
24	11
25	12
26	4
27	13
28	7
29	2
30	14
31	2
32	15
33	8
34	4
35	16
36	17
37	2
38	4
39	8
40	18
41	2
42	14
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	16
56	24
57	8
58	4
59	2
60	25
61	2
62	4
63	22
64	26
65	16
66	14
67	2
68	7
69	8
70	27
71	2
72	28
73	2
74	4
75	29
76	7
77	30
78	14
79	2
80	31
81	32
82	4
83	2
84	33
85	16
86	4
87	8
88	24
89	2
90	34
91	30
92	7
93	8
94	4
95	16
96	35
97	2
98	36
99	22
100	37
101	2
102	14
103	2
104	24
105	38

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

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