A324400 - cp's OEIS frontend

A324400 Lexicographically earliest sequence such that a(i) = a(j) => f(i) = f(j) for all i, j >= 1, where f(n) = -1 if n = 2^k and k > 0, and f(n) = n for all other numbers.

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

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

cp's OEIS Frontend

A324400 Lexicographically earliest sequence such that a(i) = a(j) => f(i) = f(j) for all i, j >= 1, where f(n) = -1 if n = 2^k and k > 0, and f(n) = n for all other numbers.

Table of values

List of values

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

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

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