A225889 - cp's OEIS frontend

A225889 Least prime p_m such that n = p_m-p_{m-1}+...+(-1)^(m-k)*p_k for some 0 where p_j denotes the j-th prime.

n	a(n)
1	3
2	5
3	7
4	5
5	7
6	11
7	13
8	11
9	11
10	17
11	19
12	17
13	17
14	23
15	17
16	23
17	23
18	31
19	23
20	41
21	23
22	41
23	31
24	47
25	29
26	47
27	37
28	59
29	41
30	59
31	37
32	59
33	43
34	67
35	37
36	67
37	43
38	67
39	43
40	73
41	61
42	83
43	53
44	83
45	47
46	101
47	61
48	97
49	53
50	97
51	59
52	97
53	59
54	103
55	61
56	109
57	67
58	127
59	67
60	131

[3, 5, 7, 5, 7, 11, 13, 11, 11, 17, 19, 17, 17, 23, 17, 23, 23, 31, 23, 41, 23, 41, 31, 47, 29, 47, 37, 59, 41, 59, 37, 59, 43, 67, 37, 67, 43, 67, 43, 73, 61, 83, 53, 83, 47, 101, 61, 97, 53, 97, 59, 97, 59, 103, 61, 109, 67, 127, 67, 131]

cp's OEIS Frontend

A225889 Least prime p_m such that n = p_m-p_{m-1}+...+(-1)^(m-k)*p_k for some 0 where p_j denotes the j-th prime.

Table of values

List of values

n	a(n)
1	3
2	5
3	7
4	5
5	7
6	11
7	13
8	11
9	11
10	17
11	19
12	17
13	17
14	23
15	17
16	23
17	23
18	31
19	23
20	41
21	23
22	41
23	31
24	47
25	29
26	47
27	37
28	59
29	41
30	59
31	37
32	59
33	43
34	67
35	37
36	67
37	43
38	67
39	43
40	73
41	61
42	83
43	53
44	83
45	47
46	101
47	61
48	97
49	53
50	97
51	59
52	97
53	59
54	103
55	61
56	109
57	67
58	127
59	67
60	131

n	a(n)
1	3
2	5
3	7
4	5
5	7
6	11
7	13
8	11
9	11
10	17
11	19
12	17
13	17
14	23
15	17
16	23
17	23
18	31
19	23
20	41
21	23
22	41
23	31
24	47
25	29
26	47
27	37
28	59
29	41
30	59
31	37
32	59
33	43
34	67
35	37
36	67
37	43
38	67
39	43
40	73
41	61
42	83
43	53
44	83
45	47
46	101
47	61
48	97
49	53
50	97
51	59
52	97
53	59
54	103
55	61
56	109
57	67
58	127
59	67
60	131

n	a(n)
1	3
2	5
3	7
4	5
5	7
6	11
7	13
8	11
9	11
10	17
11	19
12	17
13	17
14	23
15	17
16	23
17	23
18	31
19	23
20	41
21	23
22	41
23	31
24	47
25	29
26	47
27	37
28	59
29	41
30	59
31	37
32	59
33	43
34	67
35	37
36	67
37	43
38	67
39	43
40	73
41	61
42	83
43	53
44	83
45	47
46	101
47	61
48	97
49	53
50	97
51	59
52	97
53	59
54	103
55	61
56	109
57	67
58	127
59	67
60	131