A085393 - cp's OEIS frontend

A085393 Difference between the largest and the smallest prime factor of the greatest proper divisor of n.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	3
21	0
22	0
23	0
24	1
25	0
26	0
27	0
28	5
29	0
30	2
31	0
32	0
33	0
34	0
35	0
36	1
37	0
38	0
39	0
40	3
41	0
42	4
43	0
44	9
45	2
46	0
47	0
48	1
49	0
50	0
51	0
52	11
53	0
54	0
55	0
56	5
57	0
58	0
59	0
60	3
61	0
62	0
63	4
64	0
65	0
66	8
67	0
68	15
69	0
70	2
71	0
72	1
73	0
74	0
75	0
76	17
77	0
78	10
79	0
80	3
81	0
82	0
83	0
84	5
85	0
86	0
87	0
88	9
89	0
90	2
91	0
92	21
93	0
94	0
95	0
96	1
97	0
98	0
99	8
100	3
101	0
102	14

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 1, 0, 0, 0, 5, 0, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0, 3, 0, 4, 0, 9, 2, 0, 0, 1, 0, 0, 0, 11, 0, 0, 0, 5, 0, 0, 0, 3, 0, 0, 4, 0, 0, 8, 0, 15, 0, 2, 0, 1, 0, 0, 0, 17, 0, 10, 0, 3, 0, 0, 0, 5, 0, 0, 0, 9, 0, 2, 0, 21, 0, 0, 0, 1, 0, 0, 8, 3, 0, 14]

cp's OEIS Frontend

A085393 Difference between the largest and the smallest prime factor of the greatest proper divisor of n.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	3
21	0
22	0
23	0
24	1
25	0
26	0
27	0
28	5
29	0
30	2
31	0
32	0
33	0
34	0
35	0
36	1
37	0
38	0
39	0
40	3
41	0
42	4
43	0
44	9
45	2
46	0
47	0
48	1
49	0
50	0
51	0
52	11
53	0
54	0
55	0
56	5
57	0
58	0
59	0
60	3
61	0
62	0
63	4
64	0
65	0
66	8
67	0
68	15
69	0
70	2
71	0
72	1
73	0
74	0
75	0
76	17
77	0
78	10
79	0
80	3
81	0
82	0
83	0
84	5
85	0
86	0
87	0
88	9
89	0
90	2
91	0
92	21
93	0
94	0
95	0
96	1
97	0
98	0
99	8
100	3
101	0
102	14

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	3
21	0
22	0
23	0
24	1
25	0
26	0
27	0
28	5
29	0
30	2
31	0
32	0
33	0
34	0
35	0
36	1
37	0
38	0
39	0
40	3
41	0
42	4
43	0
44	9
45	2
46	0
47	0
48	1
49	0
50	0
51	0
52	11
53	0
54	0
55	0
56	5
57	0
58	0
59	0
60	3
61	0
62	0
63	4
64	0
65	0
66	8
67	0
68	15
69	0
70	2
71	0
72	1
73	0
74	0
75	0
76	17
77	0
78	10
79	0
80	3
81	0
82	0
83	0
84	5
85	0
86	0
87	0
88	9
89	0
90	2
91	0
92	21
93	0
94	0
95	0
96	1
97	0
98	0
99	8
100	3
101	0
102	14

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	3
21	0
22	0
23	0
24	1
25	0
26	0
27	0
28	5
29	0
30	2
31	0
32	0
33	0
34	0
35	0
36	1
37	0
38	0
39	0
40	3
41	0
42	4
43	0
44	9
45	2
46	0
47	0
48	1
49	0
50	0
51	0
52	11
53	0
54	0
55	0
56	5
57	0
58	0
59	0
60	3
61	0
62	0
63	4
64	0
65	0
66	8
67	0
68	15
69	0
70	2
71	0
72	1
73	0
74	0
75	0
76	17
77	0
78	10
79	0
80	3
81	0
82	0
83	0
84	5
85	0
86	0
87	0
88	9
89	0
90	2
91	0
92	21
93	0
94	0
95	0
96	1
97	0
98	0
99	8
100	3
101	0
102	14