A087242 - cp's OEIS frontend

A087242 Smallest prime number p such that n+p = q is also a prime, or 0 if no such prime number exists.

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

[2, 3, 2, 3, 2, 5, 0, 3, 2, 3, 2, 5, 0, 3, 2, 3, 2, 5, 0, 3, 2, 7, 0, 5, 0, 3, 2, 3, 2, 7, 0, 5, 0, 3, 2, 5, 0, 3, 2, 3, 2, 5, 0, 3, 2, 7, 0, 5, 0, 3, 2, 7, 0, 5, 0, 3, 2, 3, 2, 7, 0, 5, 0, 3, 2, 5, 0, 3, 2, 3, 2, 7, 0, 5, 0, 3, 2, 5, 0, 3, 2, 7, 0, 5, 0, 3, 2, 13, 0, 7, 0, 5, 0, 3, 2, 5, 0, 3, 2, 3, 2, 5, 0, 3, 2]

cp's OEIS Frontend

A087242 Smallest prime number p such that n+p = q is also a prime, or 0 if no such prime number exists.

Table of values

List of values

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

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

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