A283997 - cp's OEIS frontend

A283997 a(n) = n XOR A005187(floor(n/2)), where XOR is bitwise-xor (A003987).

n	a(n)
0	0
1	1
2	3
3	2
4	7
5	6
6	2
7	3
8	15
9	14
10	2
11	3
12	6
13	7
14	5
15	4
16	31
17	30
18	2
19	3
20	6
21	7
22	5
23	4
24	14
25	15
26	13
27	12
28	5
29	4
30	4
31	5
32	63
33	62
34	2
35	3
36	6
37	7
38	5
39	4
40	14
41	15
42	13
43	12
44	5
45	4
46	4
47	5
48	30
49	31
50	29
51	28
52	5
53	4
54	4
55	5
56	13
57	12
58	12
59	13
60	4
61	5
62	7
63	6
64	127
65	126
66	2
67	3
68	6
69	7
70	5
71	4
72	14
73	15
74	13
75	12
76	5
77	4
78	4
79	5
80	30
81	31
82	29
83	28
84	5
85	4
86	4
87	5
88	13
89	12
90	12
91	13
92	4
93	5
94	7
95	6
96	62
97	63
98	61
99	60
100	5
101	4
102	4
103	5
104	13
105	12
106	12

[0, 1, 3, 2, 7, 6, 2, 3, 15, 14, 2, 3, 6, 7, 5, 4, 31, 30, 2, 3, 6, 7, 5, 4, 14, 15, 13, 12, 5, 4, 4, 5, 63, 62, 2, 3, 6, 7, 5, 4, 14, 15, 13, 12, 5, 4, 4, 5, 30, 31, 29, 28, 5, 4, 4, 5, 13, 12, 12, 13, 4, 5, 7, 6, 127, 126, 2, 3, 6, 7, 5, 4, 14, 15, 13, 12, 5, 4, 4, 5, 30, 31, 29, 28, 5, 4, 4, 5, 13, 12, 12, 13, 4, 5, 7, 6, 62, 63, 61, 60, 5, 4, 4, 5, 13, 12, 12]

cp's OEIS Frontend

A283997 a(n) = n XOR A005187(floor(n/2)), where XOR is bitwise-xor (A003987).

Table of values

List of values

n	a(n)
0	0
1	1
2	3
3	2
4	7
5	6
6	2
7	3
8	15
9	14
10	2
11	3
12	6
13	7
14	5
15	4
16	31
17	30
18	2
19	3
20	6
21	7
22	5
23	4
24	14
25	15
26	13
27	12
28	5
29	4
30	4
31	5
32	63
33	62
34	2
35	3
36	6
37	7
38	5
39	4
40	14
41	15
42	13
43	12
44	5
45	4
46	4
47	5
48	30
49	31
50	29
51	28
52	5
53	4
54	4
55	5
56	13
57	12
58	12
59	13
60	4
61	5
62	7
63	6
64	127
65	126
66	2
67	3
68	6
69	7
70	5
71	4
72	14
73	15
74	13
75	12
76	5
77	4
78	4
79	5
80	30
81	31
82	29
83	28
84	5
85	4
86	4
87	5
88	13
89	12
90	12
91	13
92	4
93	5
94	7
95	6
96	62
97	63
98	61
99	60
100	5
101	4
102	4
103	5
104	13
105	12
106	12

n	a(n)
0	0
1	1
2	3
3	2
4	7
5	6
6	2
7	3
8	15
9	14
10	2
11	3
12	6
13	7
14	5
15	4
16	31
17	30
18	2
19	3
20	6
21	7
22	5
23	4
24	14
25	15
26	13
27	12
28	5
29	4
30	4
31	5
32	63
33	62
34	2
35	3
36	6
37	7
38	5
39	4
40	14
41	15
42	13
43	12
44	5
45	4
46	4
47	5
48	30
49	31
50	29
51	28
52	5
53	4
54	4
55	5
56	13
57	12
58	12
59	13
60	4
61	5
62	7
63	6
64	127
65	126
66	2
67	3
68	6
69	7
70	5
71	4
72	14
73	15
74	13
75	12
76	5
77	4
78	4
79	5
80	30
81	31
82	29
83	28
84	5
85	4
86	4
87	5
88	13
89	12
90	12
91	13
92	4
93	5
94	7
95	6
96	62
97	63
98	61
99	60
100	5
101	4
102	4
103	5
104	13
105	12
106	12

n	a(n)
0	0
1	1
2	3
3	2
4	7
5	6
6	2
7	3
8	15
9	14
10	2
11	3
12	6
13	7
14	5
15	4
16	31
17	30
18	2
19	3
20	6
21	7
22	5
23	4
24	14
25	15
26	13
27	12
28	5
29	4
30	4
31	5
32	63
33	62
34	2
35	3
36	6
37	7
38	5
39	4
40	14
41	15
42	13
43	12
44	5
45	4
46	4
47	5
48	30
49	31
50	29
51	28
52	5
53	4
54	4
55	5
56	13
57	12
58	12
59	13
60	4
61	5
62	7
63	6
64	127
65	126
66	2
67	3
68	6
69	7
70	5
71	4
72	14
73	15
74	13
75	12
76	5
77	4
78	4
79	5
80	30
81	31
82	29
83	28
84	5
85	4
86	4
87	5
88	13
89	12
90	12
91	13
92	4
93	5
94	7
95	6
96	62
97	63
98	61
99	60
100	5
101	4
102	4
103	5
104	13
105	12
106	12