A100112 - cp's OEIS frontend

A100112 If n is the k-th squarefree number then a(n) = k, otherwise a(n) = 0.

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

[1, 2, 3, 0, 4, 5, 6, 0, 0, 7, 8, 0, 9, 10, 11, 0, 12, 0, 13, 0, 14, 15, 16, 0, 0, 17, 0, 0, 18, 19, 20, 0, 21, 22, 23, 0, 24, 25, 26, 0, 27, 28, 29, 0, 0, 30, 31, 0, 0, 0, 32, 0, 33, 0, 34, 0, 35, 36, 37, 0, 38, 39, 0, 0, 40, 41, 42, 0, 43, 44, 45, 0, 46, 47, 0, 0, 48, 49, 50, 0, 0, 51, 52, 0]

cp's OEIS Frontend

A100112 If n is the k-th squarefree number then a(n) = k, otherwise a(n) = 0.

Table of values

List of values

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

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

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