A115304 - cp's OEIS frontend

A115304 a(n) = n if n < 4, otherwise 4*a(floor(n/4)) + 3 - n mod 4.

n	a(n)
1	1
2	2
3	3
4	7
5	6
6	5
7	4
8	11
9	10
10	9
11	8
12	15
13	14
14	13
15	12
16	31
17	30
18	29
19	28
20	27
21	26
22	25
23	24
24	23
25	22
26	21
27	20
28	19
29	18
30	17
31	16
32	47
33	46
34	45
35	44
36	43
37	42
38	41
39	40
40	39
41	38
42	37
43	36
44	35
45	34
46	33
47	32
48	63
49	62
50	61
51	60
52	59
53	58
54	57
55	56
56	55
57	54
58	53
59	52
60	51
61	50
62	49
63	48
64	127
65	126
66	125
67	124
68	123
69	122
70	121

[1, 2, 3, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12, 31, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, 17, 16, 47, 46, 45, 44, 43, 42, 41, 40, 39, 38, 37, 36, 35, 34, 33, 32, 63, 62, 61, 60, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 49, 48, 127, 126, 125, 124, 123, 122, 121]

cp's OEIS Frontend

A115304 a(n) = n if n < 4, otherwise 4*a(floor(n/4)) + 3 - n mod 4.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	7
5	6
6	5
7	4
8	11
9	10
10	9
11	8
12	15
13	14
14	13
15	12
16	31
17	30
18	29
19	28
20	27
21	26
22	25
23	24
24	23
25	22
26	21
27	20
28	19
29	18
30	17
31	16
32	47
33	46
34	45
35	44
36	43
37	42
38	41
39	40
40	39
41	38
42	37
43	36
44	35
45	34
46	33
47	32
48	63
49	62
50	61
51	60
52	59
53	58
54	57
55	56
56	55
57	54
58	53
59	52
60	51
61	50
62	49
63	48
64	127
65	126
66	125
67	124
68	123
69	122
70	121

n	a(n)
1	1
2	2
3	3
4	7
5	6
6	5
7	4
8	11
9	10
10	9
11	8
12	15
13	14
14	13
15	12
16	31
17	30
18	29
19	28
20	27
21	26
22	25
23	24
24	23
25	22
26	21
27	20
28	19
29	18
30	17
31	16
32	47
33	46
34	45
35	44
36	43
37	42
38	41
39	40
40	39
41	38
42	37
43	36
44	35
45	34
46	33
47	32
48	63
49	62
50	61
51	60
52	59
53	58
54	57
55	56
56	55
57	54
58	53
59	52
60	51
61	50
62	49
63	48
64	127
65	126
66	125
67	124
68	123
69	122
70	121

n	a(n)
1	1
2	2
3	3
4	7
5	6
6	5
7	4
8	11
9	10
10	9
11	8
12	15
13	14
14	13
15	12
16	31
17	30
18	29
19	28
20	27
21	26
22	25
23	24
24	23
25	22
26	21
27	20
28	19
29	18
30	17
31	16
32	47
33	46
34	45
35	44
36	43
37	42
38	41
39	40
40	39
41	38
42	37
43	36
44	35
45	34
46	33
47	32
48	63
49	62
50	61
51	60
52	59
53	58
54	57
55	56
56	55
57	54
58	53
59	52
60	51
61	50
62	49
63	48
64	127
65	126
66	125
67	124
68	123
69	122
70	121