A212332 - cp's OEIS frontend

A212332 The difference between the largest and smallest prime factor of n as n runs through the numbers with at least two distinct prime factors.

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

[1, 3, 1, 5, 2, 1, 3, 4, 9, 1, 11, 5, 3, 8, 15, 2, 1, 17, 10, 3, 5, 9, 2, 21, 1, 3, 14, 11, 1, 6, 5, 16, 27, 3, 29, 4, 8, 9, 15, 20, 5, 1, 35, 2, 17, 4, 11, 3, 39, 5, 12, 41, 26, 9, 3, 6, 21, 28, 45, 14, 1, 5, 8, 3, 15, 11, 4, 51, 1, 9, 34, 5, 17, 18, 27, 10]

cp's OEIS Frontend

A212332 The difference between the largest and smallest prime factor of n as n runs through the numbers with at least two distinct prime factors.

Table of values

List of values

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

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

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