A115013 - cp's OEIS frontend

A115013 a(n) = difference between largest and smallest primes dividing the n-th squarefree integer (with a(1)=0).

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

[0, 0, 0, 0, 1, 0, 3, 0, 0, 5, 2, 0, 0, 4, 9, 0, 11, 0, 3, 0, 8, 15, 2, 0, 17, 10, 0, 5, 0, 21, 0, 14, 0, 6, 16, 27, 0, 0, 29, 8, 9, 0, 20, 5, 0, 0, 35, 4, 11, 0, 39, 0, 12, 41, 26, 0, 6, 28, 45, 14, 0, 0, 15, 0, 4, 51, 0, 0, 9, 34, 0, 17, 18, 57, 10, 59, 38, 0, 40, 11, 0, 12, 65, 0, 21, 0, 44, 69, 2]

cp's OEIS Frontend

A115013 a(n) = difference between largest and smallest primes dividing the n-th squarefree integer (with a(1)=0).

Table of values

List of values

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

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

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