A322988 - cp's OEIS frontend

A322988 Lexicographically earliest such sequence a that a(i) = a(j) => f(i) = f(j) for all i, j, where f(1) = 0 if n is a prime power > 2, f(2) = -1, and f(n) = A322990(n) for all other numbers.

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

[1, 2, 3, 3, 3, 4, 3, 3, 3, 5, 3, 6, 3, 7, 8, 3, 3, 9, 3, 10, 11, 12, 3, 13, 3, 14, 3, 15, 3, 6, 3, 3, 16, 17, 18, 19, 3, 20, 21, 22, 3, 8, 3, 23, 24, 25, 3, 26, 3, 27, 28, 29, 3, 30, 31, 32, 33, 34, 3, 35, 3, 36, 37, 3, 38, 11, 3, 39, 40, 10, 3, 41, 3, 42, 43, 44, 45, 13, 3, 46, 3, 47, 3, 48, 49, 50, 51, 52, 3, 15, 53, 54, 55, 56, 57, 58, 3, 59, 60, 61, 3, 16, 3]

cp's OEIS Frontend

A322988 Lexicographically earliest such sequence a that a(i) = a(j) => f(i) = f(j) for all i, j, where f(1) = 0 if n is a prime power > 2, f(2) = -1, and f(n) = A322990(n) for all other numbers.

Table of values

List of values

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

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

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