A126007 - cp's OEIS frontend

A126007 Involution of nonnegative integers: Keep the least significant quaternary digit q0 of n fixed, but swap the positions of digits q1 <-> q2, q3 <-> q4, ..., etc. in the base-4 expansion of n (where n = ... + q4256 + q364 + q216 + q14 + q0).

n	a(n)
0	0
1	1
2	2
3	3
4	16
5	17
6	18
7	19
8	32
9	33
10	34
11	35
12	48
13	49
14	50
15	51
16	4
17	5
18	6
19	7
20	20
21	21
22	22
23	23
24	36
25	37
26	38
27	39
28	52
29	53
30	54
31	55
32	8
33	9
34	10
35	11
36	24
37	25
38	26
39	27
40	40
41	41
42	42
43	43
44	56
45	57
46	58
47	59
48	12
49	13
50	14
51	15
52	28
53	29
54	30
55	31
56	44
57	45
58	46
59	47
60	60
61	61
62	62
63	63
64	256
65	257
66	258
67	259
68	272

[0, 1, 2, 3, 16, 17, 18, 19, 32, 33, 34, 35, 48, 49, 50, 51, 4, 5, 6, 7, 20, 21, 22, 23, 36, 37, 38, 39, 52, 53, 54, 55, 8, 9, 10, 11, 24, 25, 26, 27, 40, 41, 42, 43, 56, 57, 58, 59, 12, 13, 14, 15, 28, 29, 30, 31, 44, 45, 46, 47, 60, 61, 62, 63, 256, 257, 258, 259, 272]

cp's OEIS Frontend

A126007 Involution of nonnegative integers: Keep the least significant quaternary digit q0 of n fixed, but swap the positions of digits q1 <-> q2, q3 <-> q4, ..., etc. in the base-4 expansion of n (where n = ... + q4256 + q364 + q216 + q14 + q0).

Table of values

List of values

n	a(n)
0	0
1	1
2	2
3	3
4	16
5	17
6	18
7	19
8	32
9	33
10	34
11	35
12	48
13	49
14	50
15	51
16	4
17	5
18	6
19	7
20	20
21	21
22	22
23	23
24	36
25	37
26	38
27	39
28	52
29	53
30	54
31	55
32	8
33	9
34	10
35	11
36	24
37	25
38	26
39	27
40	40
41	41
42	42
43	43
44	56
45	57
46	58
47	59
48	12
49	13
50	14
51	15
52	28
53	29
54	30
55	31
56	44
57	45
58	46
59	47
60	60
61	61
62	62
63	63
64	256
65	257
66	258
67	259
68	272

n	a(n)
0	0
1	1
2	2
3	3
4	16
5	17
6	18
7	19
8	32
9	33
10	34
11	35
12	48
13	49
14	50
15	51
16	4
17	5
18	6
19	7
20	20
21	21
22	22
23	23
24	36
25	37
26	38
27	39
28	52
29	53
30	54
31	55
32	8
33	9
34	10
35	11
36	24
37	25
38	26
39	27
40	40
41	41
42	42
43	43
44	56
45	57
46	58
47	59
48	12
49	13
50	14
51	15
52	28
53	29
54	30
55	31
56	44
57	45
58	46
59	47
60	60
61	61
62	62
63	63
64	256
65	257
66	258
67	259
68	272

cp's OEIS Frontend

A126007 Involution of nonnegative integers: Keep the least significant quaternary digit q0 of n fixed, but swap the positions of digits q1 <-> q2, q3 <-> q4, ..., etc. in the base-4 expansion of n (where n = ... + q4*256 + q3*64 + q2*16 + q1*4 + q0).

Table of values

List of values

A126007 Involution of nonnegative integers: Keep the least significant quaternary digit q0 of n fixed, but swap the positions of digits q1 <-> q2, q3 <-> q4, ..., etc. in the base-4 expansion of n (where n = ... + q4256 + q364 + q216 + q14 + q0).

n	a(n)
0	0
1	1
2	2
3	3
4	16
5	17
6	18
7	19
8	32
9	33
10	34
11	35
12	48
13	49
14	50
15	51
16	4
17	5
18	6
19	7
20	20
21	21
22	22
23	23
24	36
25	37
26	38
27	39
28	52
29	53
30	54
31	55
32	8
33	9
34	10
35	11
36	24
37	25
38	26
39	27
40	40
41	41
42	42
43	43
44	56
45	57
46	58
47	59
48	12
49	13
50	14
51	15
52	28
53	29
54	30
55	31
56	44
57	45
58	46
59	47
60	60
61	61
62	62
63	63
64	256
65	257
66	258
67	259
68	272