A338572 - cp's OEIS frontend

A338572 Number of integers less than n with the same number of factorizations into prime powers as n.

n	a(n)
1	0
2	1
3	2
4	0
5	3
6	4
7	5
8	0
9	1
10	6
11	7
12	2
13	8
14	9
15	10
16	0
17	11
18	3
19	12
20	4
21	13
22	14
23	15
24	1
25	5
26	16
27	2
28	6
29	17
30	18
31	19
32	0
33	20
34	21
35	22
36	0
37	23
38	24
39	25
40	3
41	26
42	27
43	28
44	7
45	8
46	29
47	30
48	1
49	9
50	10
51	31
52	11
53	32
54	4
55	33
56	5
57	34
58	35
59	36
60	12
61	37
62	38
63	13
64	0
65	39
66	40
67	41
68	14
69	42
70	43
71	44
72	0
73	45
74	46
75	15
76	16
77	47
78	48
79	49
80	2

[0, 1, 2, 0, 3, 4, 5, 0, 1, 6, 7, 2, 8, 9, 10, 0, 11, 3, 12, 4, 13, 14, 15, 1, 5, 16, 2, 6, 17, 18, 19, 0, 20, 21, 22, 0, 23, 24, 25, 3, 26, 27, 28, 7, 8, 29, 30, 1, 9, 10, 31, 11, 32, 4, 33, 5, 34, 35, 36, 12, 37, 38, 13, 0, 39, 40, 41, 14, 42, 43, 44, 0, 45, 46, 15, 16, 47, 48, 49, 2]

cp's OEIS Frontend

A338572 Number of integers less than n with the same number of factorizations into prime powers as n.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	0
5	3
6	4
7	5
8	0
9	1
10	6
11	7
12	2
13	8
14	9
15	10
16	0
17	11
18	3
19	12
20	4
21	13
22	14
23	15
24	1
25	5
26	16
27	2
28	6
29	17
30	18
31	19
32	0
33	20
34	21
35	22
36	0
37	23
38	24
39	25
40	3
41	26
42	27
43	28
44	7
45	8
46	29
47	30
48	1
49	9
50	10
51	31
52	11
53	32
54	4
55	33
56	5
57	34
58	35
59	36
60	12
61	37
62	38
63	13
64	0
65	39
66	40
67	41
68	14
69	42
70	43
71	44
72	0
73	45
74	46
75	15
76	16
77	47
78	48
79	49
80	2

n	a(n)
1	0
2	1
3	2
4	0
5	3
6	4
7	5
8	0
9	1
10	6
11	7
12	2
13	8
14	9
15	10
16	0
17	11
18	3
19	12
20	4
21	13
22	14
23	15
24	1
25	5
26	16
27	2
28	6
29	17
30	18
31	19
32	0
33	20
34	21
35	22
36	0
37	23
38	24
39	25
40	3
41	26
42	27
43	28
44	7
45	8
46	29
47	30
48	1
49	9
50	10
51	31
52	11
53	32
54	4
55	33
56	5
57	34
58	35
59	36
60	12
61	37
62	38
63	13
64	0
65	39
66	40
67	41
68	14
69	42
70	43
71	44
72	0
73	45
74	46
75	15
76	16
77	47
78	48
79	49
80	2

n	a(n)
1	0
2	1
3	2
4	0
5	3
6	4
7	5
8	0
9	1
10	6
11	7
12	2
13	8
14	9
15	10
16	0
17	11
18	3
19	12
20	4
21	13
22	14
23	15
24	1
25	5
26	16
27	2
28	6
29	17
30	18
31	19
32	0
33	20
34	21
35	22
36	0
37	23
38	24
39	25
40	3
41	26
42	27
43	28
44	7
45	8
46	29
47	30
48	1
49	9
50	10
51	31
52	11
53	32
54	4
55	33
56	5
57	34
58	35
59	36
60	12
61	37
62	38
63	13
64	0
65	39
66	40
67	41
68	14
69	42
70	43
71	44
72	0
73	45
74	46
75	15
76	16
77	47
78	48
79	49
80	2