A124259 - cp's OEIS frontend

A124259 Smallest k such that n + n^2 + ... + n^k is not squarefree.

n	a(n)
1	4
2	6
3	2
4	1
5	4
6	14
7	2
8	1
9	1
10	9
11	2
12	1
13	4
14	6
15	2
16	1
17	2
18	1
19	2
20	1
21	4
22	3
23	2
24	1
25	1
26	2
27	1
28	1
29	4
30	3
31	2
32	1
33	4
34	9
35	2
36	1
37	4
38	4
39	2
40	1
41	4
42	20
43	2
44	1
45	1
46	9
47	2
48	1
49	1
50	1
51	2
52	1
53	2
54	1
55	2
56	1
57	4
58	5
59	2
60	1
61	4
62	2
63	1
64	1
65	4
66	25
67	2
68	1
69	4
70	4
71	2
72	1
73	4
74	2
75	1
76	1
77	4
78	7
79	2
80	1
81	1
82	4
83	2
84	1
85	4
86	6
87	2
88	1
89	2
90	1
91	2
92	1
93	4
94	9
95	2
96	1
97	2
98	1
99	1
100	1
101	4
102	20
103	2
104	1

[4, 6, 2, 1, 4, 14, 2, 1, 1, 9, 2, 1, 4, 6, 2, 1, 2, 1, 2, 1, 4, 3, 2, 1, 1, 2, 1, 1, 4, 3, 2, 1, 4, 9, 2, 1, 4, 4, 2, 1, 4, 20, 2, 1, 1, 9, 2, 1, 1, 1, 2, 1, 2, 1, 2, 1, 4, 5, 2, 1, 4, 2, 1, 1, 4, 25, 2, 1, 4, 4, 2, 1, 4, 2, 1, 1, 4, 7, 2, 1, 1, 4, 2, 1, 4, 6, 2, 1, 2, 1, 2, 1, 4, 9, 2, 1, 2, 1, 1, 1, 4, 20, 2, 1]

cp's OEIS Frontend

A124259 Smallest k such that n + n^2 + ... + n^k is not squarefree.

Table of values

List of values

n	a(n)
1	4
2	6
3	2
4	1
5	4
6	14
7	2
8	1
9	1
10	9
11	2
12	1
13	4
14	6
15	2
16	1
17	2
18	1
19	2
20	1
21	4
22	3
23	2
24	1
25	1
26	2
27	1
28	1
29	4
30	3
31	2
32	1
33	4
34	9
35	2
36	1
37	4
38	4
39	2
40	1
41	4
42	20
43	2
44	1
45	1
46	9
47	2
48	1
49	1
50	1
51	2
52	1
53	2
54	1
55	2
56	1
57	4
58	5
59	2
60	1
61	4
62	2
63	1
64	1
65	4
66	25
67	2
68	1
69	4
70	4
71	2
72	1
73	4
74	2
75	1
76	1
77	4
78	7
79	2
80	1
81	1
82	4
83	2
84	1
85	4
86	6
87	2
88	1
89	2
90	1
91	2
92	1
93	4
94	9
95	2
96	1
97	2
98	1
99	1
100	1
101	4
102	20
103	2
104	1

n	a(n)
1	4
2	6
3	2
4	1
5	4
6	14
7	2
8	1
9	1
10	9
11	2
12	1
13	4
14	6
15	2
16	1
17	2
18	1
19	2
20	1
21	4
22	3
23	2
24	1
25	1
26	2
27	1
28	1
29	4
30	3
31	2
32	1
33	4
34	9
35	2
36	1
37	4
38	4
39	2
40	1
41	4
42	20
43	2
44	1
45	1
46	9
47	2
48	1
49	1
50	1
51	2
52	1
53	2
54	1
55	2
56	1
57	4
58	5
59	2
60	1
61	4
62	2
63	1
64	1
65	4
66	25
67	2
68	1
69	4
70	4
71	2
72	1
73	4
74	2
75	1
76	1
77	4
78	7
79	2
80	1
81	1
82	4
83	2
84	1
85	4
86	6
87	2
88	1
89	2
90	1
91	2
92	1
93	4
94	9
95	2
96	1
97	2
98	1
99	1
100	1
101	4
102	20
103	2
104	1

n	a(n)
1	4
2	6
3	2
4	1
5	4
6	14
7	2
8	1
9	1
10	9
11	2
12	1
13	4
14	6
15	2
16	1
17	2
18	1
19	2
20	1
21	4
22	3
23	2
24	1
25	1
26	2
27	1
28	1
29	4
30	3
31	2
32	1
33	4
34	9
35	2
36	1
37	4
38	4
39	2
40	1
41	4
42	20
43	2
44	1
45	1
46	9
47	2
48	1
49	1
50	1
51	2
52	1
53	2
54	1
55	2
56	1
57	4
58	5
59	2
60	1
61	4
62	2
63	1
64	1
65	4
66	25
67	2
68	1
69	4
70	4
71	2
72	1
73	4
74	2
75	1
76	1
77	4
78	7
79	2
80	1
81	1
82	4
83	2
84	1
85	4
86	6
87	2
88	1
89	2
90	1
91	2
92	1
93	4
94	9
95	2
96	1
97	2
98	1
99	1
100	1
101	4
102	20
103	2
104	1