A117180 - cp's OEIS frontend

A117180 Lowest prime-power dividing the n-th nonsquarefree positive integer.

n	a(n)
1	4
2	8
3	9
4	3
5	16
6	2
7	4
8	3
9	25
10	27
11	4
12	32
13	4
14	5
15	4
16	5
17	3
18	49
19	2
20	4
21	2
22	7
23	3
24	7
25	64
26	4
27	8
28	3
29	4
30	5
31	81
32	3
33	8
34	2
35	4
36	3
37	2
38	9
39	4
40	8
41	4
42	7
43	4
44	9
45	3
46	121
47	4
48	125
49	2
50	128
51	3
52	5
53	8
54	4
55	9
56	3
57	4
58	2
59	8
60	9
61	3
62	5
63	2
64	4
65	3
66	169
67	9
68	4
69	7
70	11
71	4
72	8
73	4
74	7
75	3
76	4
77	2
78	8
79	3
80	9
81	13
82	4
83	8
84	4
85	7
86	9
87	3
88	8
89	2
90	4
91	3
92	2
93	243
94	4
95	5
96	8

[4, 8, 9, 3, 16, 2, 4, 3, 25, 27, 4, 32, 4, 5, 4, 5, 3, 49, 2, 4, 2, 7, 3, 7, 64, 4, 8, 3, 4, 5, 81, 3, 8, 2, 4, 3, 2, 9, 4, 8, 4, 7, 4, 9, 3, 121, 4, 125, 2, 128, 3, 5, 8, 4, 9, 3, 4, 2, 8, 9, 3, 5, 2, 4, 3, 169, 9, 4, 7, 11, 4, 8, 4, 7, 3, 4, 2, 8, 3, 9, 13, 4, 8, 4, 7, 9, 3, 8, 2, 4, 3, 2, 243, 4, 5, 8]

cp's OEIS Frontend

A117180 Lowest prime-power dividing the n-th nonsquarefree positive integer.

Table of values

List of values

n	a(n)
1	4
2	8
3	9
4	3
5	16
6	2
7	4
8	3
9	25
10	27
11	4
12	32
13	4
14	5
15	4
16	5
17	3
18	49
19	2
20	4
21	2
22	7
23	3
24	7
25	64
26	4
27	8
28	3
29	4
30	5
31	81
32	3
33	8
34	2
35	4
36	3
37	2
38	9
39	4
40	8
41	4
42	7
43	4
44	9
45	3
46	121
47	4
48	125
49	2
50	128
51	3
52	5
53	8
54	4
55	9
56	3
57	4
58	2
59	8
60	9
61	3
62	5
63	2
64	4
65	3
66	169
67	9
68	4
69	7
70	11
71	4
72	8
73	4
74	7
75	3
76	4
77	2
78	8
79	3
80	9
81	13
82	4
83	8
84	4
85	7
86	9
87	3
88	8
89	2
90	4
91	3
92	2
93	243
94	4
95	5
96	8

n	a(n)
1	4
2	8
3	9
4	3
5	16
6	2
7	4
8	3
9	25
10	27
11	4
12	32
13	4
14	5
15	4
16	5
17	3
18	49
19	2
20	4
21	2
22	7
23	3
24	7
25	64
26	4
27	8
28	3
29	4
30	5
31	81
32	3
33	8
34	2
35	4
36	3
37	2
38	9
39	4
40	8
41	4
42	7
43	4
44	9
45	3
46	121
47	4
48	125
49	2
50	128
51	3
52	5
53	8
54	4
55	9
56	3
57	4
58	2
59	8
60	9
61	3
62	5
63	2
64	4
65	3
66	169
67	9
68	4
69	7
70	11
71	4
72	8
73	4
74	7
75	3
76	4
77	2
78	8
79	3
80	9
81	13
82	4
83	8
84	4
85	7
86	9
87	3
88	8
89	2
90	4
91	3
92	2
93	243
94	4
95	5
96	8

n	a(n)
1	4
2	8
3	9
4	3
5	16
6	2
7	4
8	3
9	25
10	27
11	4
12	32
13	4
14	5
15	4
16	5
17	3
18	49
19	2
20	4
21	2
22	7
23	3
24	7
25	64
26	4
27	8
28	3
29	4
30	5
31	81
32	3
33	8
34	2
35	4
36	3
37	2
38	9
39	4
40	8
41	4
42	7
43	4
44	9
45	3
46	121
47	4
48	125
49	2
50	128
51	3
52	5
53	8
54	4
55	9
56	3
57	4
58	2
59	8
60	9
61	3
62	5
63	2
64	4
65	3
66	169
67	9
68	4
69	7
70	11
71	4
72	8
73	4
74	7
75	3
76	4
77	2
78	8
79	3
80	9
81	13
82	4
83	8
84	4
85	7
86	9
87	3
88	8
89	2
90	4
91	3
92	2
93	243
94	4
95	5
96	8