A217122 - cp's OEIS frontend

A217122 a(n) = (number of 1's in binary expansion of n)th positive number not among the previous terms.

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

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

cp's OEIS Frontend

A217122 a(n) = (number of 1's in binary expansion of n)th positive number not among the previous terms.

Table of values

List of values

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

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

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