A038713 - cp's OEIS frontend

A038713 a(n) = n XOR (n-1), i.e., nim-sum of sequential pairs, written in binary.

n	a(n)
1	1
2	11
3	1
4	111
5	1
6	11
7	1
8	1111
9	1
10	11
11	1
12	111
13	1
14	11
15	1
16	11111
17	1
18	11
19	1
20	111
21	1
22	11
23	1
24	1111
25	1
26	11
27	1
28	111
29	1
30	11
31	1
32	111111
33	1
34	11
35	1
36	111
37	1
38	11
39	1
40	1111
41	1
42	11
43	1
44	111
45	1
46	11
47	1
48	11111
49	1
50	11
51	1
52	111
53	1
54	11
55	1
56	1111
57	1
58	11
59	1
60	111
61	1
62	11
63	1
64	1111111
65	1
66	11
67	1
68	111
69	1

[1, 11, 1, 111, 1, 11, 1, 1111, 1, 11, 1, 111, 1, 11, 1, 11111, 1, 11, 1, 111, 1, 11, 1, 1111, 1, 11, 1, 111, 1, 11, 1, 111111, 1, 11, 1, 111, 1, 11, 1, 1111, 1, 11, 1, 111, 1, 11, 1, 11111, 1, 11, 1, 111, 1, 11, 1, 1111, 1, 11, 1, 111, 1, 11, 1, 1111111, 1, 11, 1, 111, 1]

cp's OEIS Frontend

A038713 a(n) = n XOR (n-1), i.e., nim-sum of sequential pairs, written in binary.

Table of values

List of values