A093008 - cp's OEIS frontend

A093008 Smallest number of 1's to append to the binary representation of n such that primes become nonprimes and nonprimes become primes.

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

[1, 5, 2, 2, 4, 1, 1, 1, 1, 2, 3, 3, 1, 1, 1, 2, 1, 1, 1, 1, 1, 4, 2, 3, 2, 1, 3, 4, 2, 1, 1, 2, 1, 2, 1, 1, 1, 3, 1, 2, 3, 7, 1, 1, 3, 4, 1, 1, 2, 1, 1, 2, 2, 1, 2, 1, 3, 12, 1, 3, 1, 2, 1, 4, 1, 5, 1, 1, 1, 2, 1, 7, 1, 1, 1, 2, 2, 1, 1, 3, 1, 2, 2, 5, 6, 1, 23, 4, 6, 1, 2, 3, 3, 2, 1, 1, 1, 1, 1, 10]

cp's OEIS Frontend

A093008 Smallest number of 1's to append to the binary representation of n such that primes become nonprimes and nonprimes become primes.

Table of values

List of values

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

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

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