A163241 - cp's OEIS frontend

A163241 Simple self-inverse permutation: Write n in base 4, then replace each digit '2' with '3' and vice versa, then convert back to decimal.

n	a(n)
0	0
1	1
2	3
3	2
4	4
5	5
6	7
7	6
8	12
9	13
10	15
11	14
12	8
13	9
14	11
15	10
16	16
17	17
18	19
19	18
20	20
21	21
22	23
23	22
24	28
25	29
26	31
27	30
28	24
29	25
30	27
31	26
32	48
33	49
34	51
35	50
36	52
37	53
38	55
39	54
40	60
41	61
42	63
43	62
44	56
45	57
46	59
47	58
48	32
49	33
50	35
51	34
52	36
53	37
54	39
55	38
56	44
57	45
58	47
59	46
60	40
61	41
62	43
63	42
64	64
65	65
66	67
67	66
68	68
69	69
70	71
71	70

[0, 1, 3, 2, 4, 5, 7, 6, 12, 13, 15, 14, 8, 9, 11, 10, 16, 17, 19, 18, 20, 21, 23, 22, 28, 29, 31, 30, 24, 25, 27, 26, 48, 49, 51, 50, 52, 53, 55, 54, 60, 61, 63, 62, 56, 57, 59, 58, 32, 33, 35, 34, 36, 37, 39, 38, 44, 45, 47, 46, 40, 41, 43, 42, 64, 65, 67, 66, 68, 69, 71, 70]

cp's OEIS Frontend

A163241 Simple self-inverse permutation: Write n in base 4, then replace each digit '2' with '3' and vice versa, then convert back to decimal.

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	2
4	4
5	5
6	7
7	6
8	12
9	13
10	15
11	14
12	8
13	9
14	11
15	10
16	16
17	17
18	19
19	18
20	20
21	21
22	23
23	22
24	28
25	29
26	31
27	30
28	24
29	25
30	27
31	26
32	48
33	49
34	51
35	50
36	52
37	53
38	55
39	54
40	60
41	61
42	63
43	62
44	56
45	57
46	59
47	58
48	32
49	33
50	35
51	34
52	36
53	37
54	39
55	38
56	44
57	45
58	47
59	46
60	40
61	41
62	43
63	42
64	64
65	65
66	67
67	66
68	68
69	69
70	71
71	70

n	a(n)
0	0
1	1
2	3
3	2
4	4
5	5
6	7
7	6
8	12
9	13
10	15
11	14
12	8
13	9
14	11
15	10
16	16
17	17
18	19
19	18
20	20
21	21
22	23
23	22
24	28
25	29
26	31
27	30
28	24
29	25
30	27
31	26
32	48
33	49
34	51
35	50
36	52
37	53
38	55
39	54
40	60
41	61
42	63
43	62
44	56
45	57
46	59
47	58
48	32
49	33
50	35
51	34
52	36
53	37
54	39
55	38
56	44
57	45
58	47
59	46
60	40
61	41
62	43
63	42
64	64
65	65
66	67
67	66
68	68
69	69
70	71
71	70

n	a(n)
0	0
1	1
2	3
3	2
4	4
5	5
6	7
7	6
8	12
9	13
10	15
11	14
12	8
13	9
14	11
15	10
16	16
17	17
18	19
19	18
20	20
21	21
22	23
23	22
24	28
25	29
26	31
27	30
28	24
29	25
30	27
31	26
32	48
33	49
34	51
35	50
36	52
37	53
38	55
39	54
40	60
41	61
42	63
43	62
44	56
45	57
46	59
47	58
48	32
49	33
50	35
51	34
52	36
53	37
54	39
55	38
56	44
57	45
58	47
59	46
60	40
61	41
62	43
63	42
64	64
65	65
66	67
67	66
68	68
69	69
70	71
71	70