A319996 - cp's OEIS frontend

A319996 Let g = A006530(n), the largest prime factor of n. This filter sequence combines (g mod 6), n/g (A052126), and a single bit A319988(n) telling whether the largest prime factor is unitary.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	5
12	11
13	7
14	12
15	13
16	14
17	5
18	15
19	7
20	16
21	17
22	10
23	5
24	18
25	19
26	12
27	20
28	21
29	5
30	22
31	7
32	23
33	13
34	10
35	24
36	25
37	7
38	12
39	17
40	26
41	5
42	27
43	7
44	16
45	28
46	10
47	5
48	29
49	30
50	31
51	13
52	21
53	5
54	32
55	33
56	34
57	17
58	10
59	5
60	35
61	7
62	12
63	36
64	37
65	24
66	22
67	7
68	16
69	13
70	38
71	5
72	39
73	7
74	12
75	40
76	21
77	41
78	27
79	7
80	42
81	43
82	10
83	5
84	44
85	33
86	12
87	13
88	26
89	5
90	45
91	46
92	16
93	17
94	10
95	24
96	47
97	7
98	48
99	28
100	49
101	5
102	22
103	7
104	34

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

cp's OEIS Frontend

A319996 Let g = A006530(n), the largest prime factor of n. This filter sequence combines (g mod 6), n/g (A052126), and a single bit A319988(n) telling whether the largest prime factor is unitary.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	5
12	11
13	7
14	12
15	13
16	14
17	5
18	15
19	7
20	16
21	17
22	10
23	5
24	18
25	19
26	12
27	20
28	21
29	5
30	22
31	7
32	23
33	13
34	10
35	24
36	25
37	7
38	12
39	17
40	26
41	5
42	27
43	7
44	16
45	28
46	10
47	5
48	29
49	30
50	31
51	13
52	21
53	5
54	32
55	33
56	34
57	17
58	10
59	5
60	35
61	7
62	12
63	36
64	37
65	24
66	22
67	7
68	16
69	13
70	38
71	5
72	39
73	7
74	12
75	40
76	21
77	41
78	27
79	7
80	42
81	43
82	10
83	5
84	44
85	33
86	12
87	13
88	26
89	5
90	45
91	46
92	16
93	17
94	10
95	24
96	47
97	7
98	48
99	28
100	49
101	5
102	22
103	7
104	34

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	5
12	11
13	7
14	12
15	13
16	14
17	5
18	15
19	7
20	16
21	17
22	10
23	5
24	18
25	19
26	12
27	20
28	21
29	5
30	22
31	7
32	23
33	13
34	10
35	24
36	25
37	7
38	12
39	17
40	26
41	5
42	27
43	7
44	16
45	28
46	10
47	5
48	29
49	30
50	31
51	13
52	21
53	5
54	32
55	33
56	34
57	17
58	10
59	5
60	35
61	7
62	12
63	36
64	37
65	24
66	22
67	7
68	16
69	13
70	38
71	5
72	39
73	7
74	12
75	40
76	21
77	41
78	27
79	7
80	42
81	43
82	10
83	5
84	44
85	33
86	12
87	13
88	26
89	5
90	45
91	46
92	16
93	17
94	10
95	24
96	47
97	7
98	48
99	28
100	49
101	5
102	22
103	7
104	34

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	8
9	9
10	10
11	5
12	11
13	7
14	12
15	13
16	14
17	5
18	15
19	7
20	16
21	17
22	10
23	5
24	18
25	19
26	12
27	20
28	21
29	5
30	22
31	7
32	23
33	13
34	10
35	24
36	25
37	7
38	12
39	17
40	26
41	5
42	27
43	7
44	16
45	28
46	10
47	5
48	29
49	30
50	31
51	13
52	21
53	5
54	32
55	33
56	34
57	17
58	10
59	5
60	35
61	7
62	12
63	36
64	37
65	24
66	22
67	7
68	16
69	13
70	38
71	5
72	39
73	7
74	12
75	40
76	21
77	41
78	27
79	7
80	42
81	43
82	10
83	5
84	44
85	33
86	12
87	13
88	26
89	5
90	45
91	46
92	16
93	17
94	10
95	24
96	47
97	7
98	48
99	28
100	49
101	5
102	22
103	7
104	34