A087377 - cp's OEIS frontend

A087377 Triangle read by rows: n-th row contains n smallest numbers k (say) such that nk+1 is a prime.

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

[1, 1, 2, 2, 4, 6, 1, 3, 4, 7, 2, 6, 8, 12, 14, 1, 2, 3, 5, 6, 7, 4, 6, 10, 16, 18, 28, 30, 2, 5, 9, 11, 12, 14, 17, 24, 2, 4, 8, 12, 14, 18, 20, 22, 30, 1, 3, 4, 6, 7, 10, 13, 15, 18, 19, 2, 6, 8, 18, 30, 32, 36, 38, 42, 56, 60, 1, 3, 5, 6, 8, 9, 13, 15, 16, 19, 20, 23, 4, 6, 10, 12, 24, 34]

cp's OEIS Frontend

A087377 Triangle read by rows: n-th row contains n smallest numbers k (say) such that nk+1 is a prime.

Table of values

List of values

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

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

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