A382468 - cp's OEIS frontend

A382468 a(n) = (largest prime factor of n) minus (its remaining distinct prime factors).

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

[2, 3, 2, 5, 1, 7, 2, 3, 3, 11, 1, 13, 5, 2, 2, 17, 1, 19, 3, 4, 9, 23, 1, 5, 11, 3, 5, 29, 0, 31, 2, 8, 15, 2, 1, 37, 17, 10, 3, 41, 2, 43, 9, 2, 21, 47, 1, 7, 3, 14, 11, 53, 1, 6, 5, 16, 27, 59, 0, 61, 29, 4, 2, 8, 6, 67, 15, 20, 0, 71, 1, 73, 35, 2, 17, 4, 8, 79, 3, 3]

cp's OEIS Frontend

A382468 a(n) = (largest prime factor of n) minus (its remaining distinct prime factors).

Table of values

List of values

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

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

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