A057300 - cp's OEIS frontend

A057300 Binary counter with odd/even bit positions swapped; base-4 counter with 1's replaced by 2's and vice versa.

n	a(n)
0	0
1	2
2	1
3	3
4	8
5	10
6	9
7	11
8	4
9	6
10	5
11	7
12	12
13	14
14	13
15	15
16	32
17	34
18	33
19	35
20	40
21	42
22	41
23	43
24	36
25	38
26	37
27	39
28	44
29	46
30	45
31	47
32	16
33	18
34	17
35	19
36	24
37	26
38	25
39	27
40	20
41	22
42	21
43	23
44	28
45	30
46	29
47	31
48	48
49	50
50	49
51	51
52	56
53	58
54	57
55	59
56	52
57	54
58	53
59	55
60	60
61	62
62	61
63	63
64	128
65	130
66	129
67	131
68	136
69	138

[0, 2, 1, 3, 8, 10, 9, 11, 4, 6, 5, 7, 12, 14, 13, 15, 32, 34, 33, 35, 40, 42, 41, 43, 36, 38, 37, 39, 44, 46, 45, 47, 16, 18, 17, 19, 24, 26, 25, 27, 20, 22, 21, 23, 28, 30, 29, 31, 48, 50, 49, 51, 56, 58, 57, 59, 52, 54, 53, 55, 60, 62, 61, 63, 128, 130, 129, 131, 136, 138]

cp's OEIS Frontend

A057300 Binary counter with odd/even bit positions swapped; base-4 counter with 1's replaced by 2's and vice versa.

Table of values

List of values

n	a(n)
0	0
1	2
2	1
3	3
4	8
5	10
6	9
7	11
8	4
9	6
10	5
11	7
12	12
13	14
14	13
15	15
16	32
17	34
18	33
19	35
20	40
21	42
22	41
23	43
24	36
25	38
26	37
27	39
28	44
29	46
30	45
31	47
32	16
33	18
34	17
35	19
36	24
37	26
38	25
39	27
40	20
41	22
42	21
43	23
44	28
45	30
46	29
47	31
48	48
49	50
50	49
51	51
52	56
53	58
54	57
55	59
56	52
57	54
58	53
59	55
60	60
61	62
62	61
63	63
64	128
65	130
66	129
67	131
68	136
69	138

n	a(n)
0	0
1	2
2	1
3	3
4	8
5	10
6	9
7	11
8	4
9	6
10	5
11	7
12	12
13	14
14	13
15	15
16	32
17	34
18	33
19	35
20	40
21	42
22	41
23	43
24	36
25	38
26	37
27	39
28	44
29	46
30	45
31	47
32	16
33	18
34	17
35	19
36	24
37	26
38	25
39	27
40	20
41	22
42	21
43	23
44	28
45	30
46	29
47	31
48	48
49	50
50	49
51	51
52	56
53	58
54	57
55	59
56	52
57	54
58	53
59	55
60	60
61	62
62	61
63	63
64	128
65	130
66	129
67	131
68	136
69	138

n	a(n)
0	0
1	2
2	1
3	3
4	8
5	10
6	9
7	11
8	4
9	6
10	5
11	7
12	12
13	14
14	13
15	15
16	32
17	34
18	33
19	35
20	40
21	42
22	41
23	43
24	36
25	38
26	37
27	39
28	44
29	46
30	45
31	47
32	16
33	18
34	17
35	19
36	24
37	26
38	25
39	27
40	20
41	22
42	21
43	23
44	28
45	30
46	29
47	31
48	48
49	50
50	49
51	51
52	56
53	58
54	57
55	59
56	52
57	54
58	53
59	55
60	60
61	62
62	61
63	63
64	128
65	130
66	129
67	131
68	136
69	138