A351124 - cp's OEIS frontend

A351124 a(n) is the least k > 0 such that the set { prime(n), ..., prime(n+k-1) } can be partitioned into two disjoint sets with equal sum, or -1 if no such k exists (prime(n) denotes the n-th prime number).

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

[3, 6, 4, 4, 4, 4, 8, 10, 4, 8, 8, 4, 10, 14, 6, 4, 6, 6, 8, 8, 4, 8, 12, 10, 4, 4, 4, 8, 4, 8, 6, 10, 4, 6, 8, 18, 4, 6, 8, 6, 4, 12, 4, 8, 10, 6, 10, 4, 8, 6, 8, 12, 10, 4, 6, 4, 8, 8, 10, 8, 12, 8, 4, 12, 6, 6, 8, 8, 14, 8, 4, 8, 10, 4, 10, 6, 4, 10, 8, 4, 4]

cp's OEIS Frontend

A351124 a(n) is the least k > 0 such that the set { prime(n), ..., prime(n+k-1) } can be partitioned into two disjoint sets with equal sum, or -1 if no such k exists (prime(n) denotes the n-th prime number).

Table of values

List of values

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

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

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