A115378 - cp's OEIS frontend

A115378 a(n) = number of positive integers k < n such that n XOR k = (n+k).

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

[0, 1, 0, 3, 1, 1, 0, 7, 3, 3, 1, 3, 1, 1, 0, 15, 7, 7, 3, 7, 3, 3, 1, 7, 3, 3, 1, 3, 1, 1, 0, 31, 15, 15, 7, 15, 7, 7, 3, 15, 7, 7, 3, 7, 3, 3, 1, 15, 7, 7, 3, 7, 3, 3, 1, 7, 3, 3, 1, 3, 1, 1, 0, 63, 31, 31, 15, 31, 15, 15, 7, 31, 15, 15, 7, 15, 7, 7, 3, 31, 15, 15, 7, 15, 7, 7, 3, 15, 7, 7, 3, 7, 3]

cp's OEIS Frontend

A115378 a(n) = number of positive integers k < n such that n XOR k = (n+k).

Table of values

List of values

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

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

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