A249112 - cp's OEIS frontend

A249112 Second smallest k > 0 such that n+(1+2+...+k) is prime.

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

[3, 2, 7, 2, 8, 10, 4, 5, 7, 2, 8, 10, 4, 5, 16, 2, 8, 10, 7, 6, 16, 5, 8, 22, 7, 5, 16, 2, 15, 22, 4, 6, 7, 9, 8, 13, 4, 5, 19, 2, 11, 10, 7, 5, 16, 5, 8, 13, 12, 6, 7, 5, 8, 22, 7, 5, 16, 2, 15, 13, 4, 9, 16, 5, 8, 13, 8, 5, 7, 2, 11, 10, 4, 14, 16, 6, 8]

cp's OEIS Frontend

A249112 Second smallest k > 0 such that n+(1+2+...+k) is prime.

Table of values

List of values

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

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

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