A357310 - cp's OEIS frontend

A357310 a(n) is the number of j in the range 1 <= j <= n with the same maximal exponent in prime factorization as n.

n	a(n)
1	1
2	1
3	2
4	1
5	3
6	4
7	5
8	1
9	2
10	6
11	7
12	3
13	8
14	9
15	10
16	1
17	11
18	4
19	12
20	5
21	13
22	14
23	15
24	2
25	6
26	16
27	3
28	7
29	17
30	18
31	19
32	1
33	20
34	21
35	22
36	8
37	23
38	24
39	25
40	4
41	26
42	27
43	28
44	9
45	10
46	29
47	30
48	2
49	11
50	12
51	31
52	13
53	32
54	5
55	33
56	6
57	34
58	35
59	36
60	14
61	37
62	38
63	15
64	1
65	39
66	40
67	41
68	16
69	42
70	43
71	44
72	7
73	45
74	46
75	17
76	18
77	47
78	48
79	49
80	3

[1, 1, 2, 1, 3, 4, 5, 1, 2, 6, 7, 3, 8, 9, 10, 1, 11, 4, 12, 5, 13, 14, 15, 2, 6, 16, 3, 7, 17, 18, 19, 1, 20, 21, 22, 8, 23, 24, 25, 4, 26, 27, 28, 9, 10, 29, 30, 2, 11, 12, 31, 13, 32, 5, 33, 6, 34, 35, 36, 14, 37, 38, 15, 1, 39, 40, 41, 16, 42, 43, 44, 7, 45, 46, 17, 18, 47, 48, 49, 3]

cp's OEIS Frontend

A357310 a(n) is the number of j in the range 1 <= j <= n with the same maximal exponent in prime factorization as n.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	1
5	3
6	4
7	5
8	1
9	2
10	6
11	7
12	3
13	8
14	9
15	10
16	1
17	11
18	4
19	12
20	5
21	13
22	14
23	15
24	2
25	6
26	16
27	3
28	7
29	17
30	18
31	19
32	1
33	20
34	21
35	22
36	8
37	23
38	24
39	25
40	4
41	26
42	27
43	28
44	9
45	10
46	29
47	30
48	2
49	11
50	12
51	31
52	13
53	32
54	5
55	33
56	6
57	34
58	35
59	36
60	14
61	37
62	38
63	15
64	1
65	39
66	40
67	41
68	16
69	42
70	43
71	44
72	7
73	45
74	46
75	17
76	18
77	47
78	48
79	49
80	3

n	a(n)
1	1
2	1
3	2
4	1
5	3
6	4
7	5
8	1
9	2
10	6
11	7
12	3
13	8
14	9
15	10
16	1
17	11
18	4
19	12
20	5
21	13
22	14
23	15
24	2
25	6
26	16
27	3
28	7
29	17
30	18
31	19
32	1
33	20
34	21
35	22
36	8
37	23
38	24
39	25
40	4
41	26
42	27
43	28
44	9
45	10
46	29
47	30
48	2
49	11
50	12
51	31
52	13
53	32
54	5
55	33
56	6
57	34
58	35
59	36
60	14
61	37
62	38
63	15
64	1
65	39
66	40
67	41
68	16
69	42
70	43
71	44
72	7
73	45
74	46
75	17
76	18
77	47
78	48
79	49
80	3

n	a(n)
1	1
2	1
3	2
4	1
5	3
6	4
7	5
8	1
9	2
10	6
11	7
12	3
13	8
14	9
15	10
16	1
17	11
18	4
19	12
20	5
21	13
22	14
23	15
24	2
25	6
26	16
27	3
28	7
29	17
30	18
31	19
32	1
33	20
34	21
35	22
36	8
37	23
38	24
39	25
40	4
41	26
42	27
43	28
44	9
45	10
46	29
47	30
48	2
49	11
50	12
51	31
52	13
53	32
54	5
55	33
56	6
57	34
58	35
59	36
60	14
61	37
62	38
63	15
64	1
65	39
66	40
67	41
68	16
69	42
70	43
71	44
72	7
73	45
74	46
75	17
76	18
77	47
78	48
79	49
80	3