A386376 - cp's OEIS frontend

A386376 a(n) is the smallest integer k such that b(n,k) is squarefree, where b(n,1) = n and b(n, k+1) = b(n,k) + rad(b(n, k)) for k >= 1.

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

[1, 1, 1, 2, 1, 1, 1, 2, 5, 1, 1, 4, 1, 1, 1, 4, 1, 3, 1, 2, 1, 1, 1, 2, 2, 1, 2, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 8, 1, 1, 1, 2, 7, 1, 1, 8, 3, 7, 1, 2, 1, 7, 1, 2, 1, 1, 1, 6, 1, 1, 5, 2, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 6, 2, 1, 1, 1, 6, 5, 1, 1, 4, 1, 1, 1]

cp's OEIS Frontend

A386376 a(n) is the smallest integer k such that b(n,k) is squarefree, where b(n,1) = n and b(n, k+1) = b(n,k) + rad(b(n, k)) for k >= 1.

Table of values

List of values

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

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

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