A304333 - cp's OEIS frontend

A304333 Number of positive integers k such that n - L(k) is a positive squarefree number, where L(k) denotes the k-th Lucas number A000204(k).

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	2
8	3
9	3
10	3
11	2
12	3
13	3
14	5
15	2
16	3
17	4
18	5
19	2
20	4
21	4
22	4
23	3
24	5
25	4
26	4
27	2
28	3
29	3
30	5
31	3
32	5
33	5
34	5
35	4
36	4
37	5
38	4
39	4
40	6
41	5
42	6
43	3
44	6
45	4
46	5
47	3
48	6
49	5
50	6
51	3
52	5
53	4
54	5
55	3
56	3
57	4
58	6
59	4
60	6
61	4
62	7
63	3
64	6
65	4
66	6
67	2
68	6
69	6
70	6
71	4
72	5
73	6
74	4
75	4
76	6
77	7
78	6
79	3
80	7
81	6
82	6
83	4
84	6
85	5
86	7
87	5
88	6
89	7
90	8

[0, 1, 1, 2, 2, 3, 2, 3, 3, 3, 2, 3, 3, 5, 2, 3, 4, 5, 2, 4, 4, 4, 3, 5, 4, 4, 2, 3, 3, 5, 3, 5, 5, 5, 4, 4, 5, 4, 4, 6, 5, 6, 3, 6, 4, 5, 3, 6, 5, 6, 3, 5, 4, 5, 3, 3, 4, 6, 4, 6, 4, 7, 3, 6, 4, 6, 2, 6, 6, 6, 4, 5, 6, 4, 4, 6, 7, 6, 3, 7, 6, 6, 4, 6, 5, 7, 5, 6, 7, 8]

cp's OEIS Frontend

A304333 Number of positive integers k such that n - L(k) is a positive squarefree number, where L(k) denotes the k-th Lucas number A000204(k).

Table of values

List of values

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	2
8	3
9	3
10	3
11	2
12	3
13	3
14	5
15	2
16	3
17	4
18	5
19	2
20	4
21	4
22	4
23	3
24	5
25	4
26	4
27	2
28	3
29	3
30	5
31	3
32	5
33	5
34	5
35	4
36	4
37	5
38	4
39	4
40	6
41	5
42	6
43	3
44	6
45	4
46	5
47	3
48	6
49	5
50	6
51	3
52	5
53	4
54	5
55	3
56	3
57	4
58	6
59	4
60	6
61	4
62	7
63	3
64	6
65	4
66	6
67	2
68	6
69	6
70	6
71	4
72	5
73	6
74	4
75	4
76	6
77	7
78	6
79	3
80	7
81	6
82	6
83	4
84	6
85	5
86	7
87	5
88	6
89	7
90	8

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	2
8	3
9	3
10	3
11	2
12	3
13	3
14	5
15	2
16	3
17	4
18	5
19	2
20	4
21	4
22	4
23	3
24	5
25	4
26	4
27	2
28	3
29	3
30	5
31	3
32	5
33	5
34	5
35	4
36	4
37	5
38	4
39	4
40	6
41	5
42	6
43	3
44	6
45	4
46	5
47	3
48	6
49	5
50	6
51	3
52	5
53	4
54	5
55	3
56	3
57	4
58	6
59	4
60	6
61	4
62	7
63	3
64	6
65	4
66	6
67	2
68	6
69	6
70	6
71	4
72	5
73	6
74	4
75	4
76	6
77	7
78	6
79	3
80	7
81	6
82	6
83	4
84	6
85	5
86	7
87	5
88	6
89	7
90	8

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	2
8	3
9	3
10	3
11	2
12	3
13	3
14	5
15	2
16	3
17	4
18	5
19	2
20	4
21	4
22	4
23	3
24	5
25	4
26	4
27	2
28	3
29	3
30	5
31	3
32	5
33	5
34	5
35	4
36	4
37	5
38	4
39	4
40	6
41	5
42	6
43	3
44	6
45	4
46	5
47	3
48	6
49	5
50	6
51	3
52	5
53	4
54	5
55	3
56	3
57	4
58	6
59	4
60	6
61	4
62	7
63	3
64	6
65	4
66	6
67	2
68	6
69	6
70	6
71	4
72	5
73	6
74	4
75	4
76	6
77	7
78	6
79	3
80	7
81	6
82	6
83	4
84	6
85	5
86	7
87	5
88	6
89	7
90	8