A295520 - cp's OEIS frontend

A295520 a(n) is the least k >= 0 such that n XOR k is prime (where XOR denotes the bitwise XOR operator).

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

[2, 2, 0, 0, 1, 0, 1, 0, 3, 2, 1, 0, 1, 0, 3, 2, 1, 0, 1, 0, 3, 2, 1, 0, 5, 4, 5, 4, 1, 0, 1, 0, 5, 4, 7, 6, 1, 0, 3, 2, 1, 0, 1, 0, 3, 2, 1, 0, 5, 4, 7, 6, 1, 0, 3, 2, 3, 2, 1, 0, 1, 0, 3, 2, 3, 2, 1, 0, 3, 2, 1, 0, 1, 0, 3, 2, 3, 2, 1, 0, 3, 2, 1, 0, 7, 6, 5]

cp's OEIS Frontend

A295520 a(n) is the least k >= 0 such that n XOR k is prime (where XOR denotes the bitwise XOR operator).

Table of values

List of values

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

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

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