A128651 - cp's OEIS frontend

A128651 In the sequence of natural numbers, replace the nonsquarefree numbers with their minimal factorization into squarefree numbers.

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

[1, 2, 3, 2, 2, 5, 6, 7, 2, 2, 2, 3, 3, 10, 11, 6, 2, 13, 14, 15, 2, 2, 2, 2, 17, 6, 3, 19, 10, 2, 21, 22, 23, 6, 2, 2, 5, 5, 26, 3, 3, 3, 14, 2, 29, 30, 31, 2, 2, 2, 2, 2, 33, 34, 35, 6, 6, 37, 38, 39, 10, 2, 2, 41, 42, 43, 22, 2, 15, 3, 46, 47, 6, 2, 2, 2, 7, 7, 10, 5, 51, 26, 2, 53, 6, 3, 3, 55]

cp's OEIS Frontend

A128651 In the sequence of natural numbers, replace the nonsquarefree numbers with their minimal factorization into squarefree numbers.

Table of values

List of values

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

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

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