A131424 - cp's OEIS frontend

A131424 Triangle read by rows: T(n,k) = prime(n) + prime(k) - 3, 1 <= k <= n.

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

[1, 2, 3, 4, 5, 7, 6, 7, 9, 11, 10, 11, 13, 15, 19, 12, 13, 15, 17, 21, 23, 16, 17, 19, 21, 25, 27, 31, 18, 19, 21, 23, 27, 29, 33, 35, 22, 23, 25, 27, 31, 33, 37, 39, 43, 28, 29, 31, 33, 37, 39, 43, 45, 49, 55, 30, 31, 33, 35, 39, 41, 45, 47, 51, 57, 59]

cp's OEIS Frontend

A131424 Triangle read by rows: T(n,k) = prime(n) + prime(k) - 3, 1 <= k <= n.

Table of values

List of values

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

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

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