A370833 - cp's OEIS frontend

A370833 a(n) is the greatest prime dividing the n-th cubefree number, for n >= 2; a(1)=1.

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

[1, 2, 3, 2, 5, 3, 7, 3, 5, 11, 3, 13, 7, 5, 17, 3, 19, 5, 7, 11, 23, 5, 13, 7, 29, 5, 31, 11, 17, 7, 3, 37, 19, 13, 41, 7, 43, 11, 5, 23, 47, 7, 5, 17, 13, 53, 11, 19, 29, 59, 5, 61, 31, 7, 13, 11, 67, 17, 23, 7, 71, 73, 37, 5, 19, 11, 13, 79, 41, 83, 7, 17, 43]

cp's OEIS Frontend

A370833 a(n) is the greatest prime dividing the n-th cubefree number, for n >= 2; a(1)=1.

Table of values

List of values

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

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

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