A344349 - cp's OEIS frontend

A344349 Number of primes along the main antidiagonal of the n X n square array whose elements are the numbers from 1..n^2, listed in increasing order by rows.

n	a(n)
1	0
2	2
3	3
4	2
5	3
6	2
7	6
8	2
9	3
10	3
11	6
12	3
13	7
14	4
15	7
16	6
17	6
18	4
19	10
20	2
21	8
22	7
23	9
24	4
25	11
26	5
27	10
28	8
29	11
30	4
31	17
32	3
33	10
34	10
35	12
36	9
37	16
38	4
39	10
40	11
41	14
42	6
43	21
44	7
45	11
46	10
47	16
48	8
49	19
50	6
51	19
52	13
53	17
54	5
55	25
56	10
57	19
58	10
59	16
60	9
61	27
62	7
63	16
64	13
65	16
66	13
67	31
68	9
69	18
70	14
71	27
72	10
73	26
74	10
75	20
76	19
77	17
78	12
79	30

[0, 2, 3, 2, 3, 2, 6, 2, 3, 3, 6, 3, 7, 4, 7, 6, 6, 4, 10, 2, 8, 7, 9, 4, 11, 5, 10, 8, 11, 4, 17, 3, 10, 10, 12, 9, 16, 4, 10, 11, 14, 6, 21, 7, 11, 10, 16, 8, 19, 6, 19, 13, 17, 5, 25, 10, 19, 10, 16, 9, 27, 7, 16, 13, 16, 13, 31, 9, 18, 14, 27, 10, 26, 10, 20, 19, 17, 12, 30]

cp's OEIS Frontend

A344349 Number of primes along the main antidiagonal of the n X n square array whose elements are the numbers from 1..n^2, listed in increasing order by rows.

Table of values

List of values

n	a(n)
1	0
2	2
3	3
4	2
5	3
6	2
7	6
8	2
9	3
10	3
11	6
12	3
13	7
14	4
15	7
16	6
17	6
18	4
19	10
20	2
21	8
22	7
23	9
24	4
25	11
26	5
27	10
28	8
29	11
30	4
31	17
32	3
33	10
34	10
35	12
36	9
37	16
38	4
39	10
40	11
41	14
42	6
43	21
44	7
45	11
46	10
47	16
48	8
49	19
50	6
51	19
52	13
53	17
54	5
55	25
56	10
57	19
58	10
59	16
60	9
61	27
62	7
63	16
64	13
65	16
66	13
67	31
68	9
69	18
70	14
71	27
72	10
73	26
74	10
75	20
76	19
77	17
78	12
79	30

n	a(n)
1	0
2	2
3	3
4	2
5	3
6	2
7	6
8	2
9	3
10	3
11	6
12	3
13	7
14	4
15	7
16	6
17	6
18	4
19	10
20	2
21	8
22	7
23	9
24	4
25	11
26	5
27	10
28	8
29	11
30	4
31	17
32	3
33	10
34	10
35	12
36	9
37	16
38	4
39	10
40	11
41	14
42	6
43	21
44	7
45	11
46	10
47	16
48	8
49	19
50	6
51	19
52	13
53	17
54	5
55	25
56	10
57	19
58	10
59	16
60	9
61	27
62	7
63	16
64	13
65	16
66	13
67	31
68	9
69	18
70	14
71	27
72	10
73	26
74	10
75	20
76	19
77	17
78	12
79	30

n	a(n)
1	0
2	2
3	3
4	2
5	3
6	2
7	6
8	2
9	3
10	3
11	6
12	3
13	7
14	4
15	7
16	6
17	6
18	4
19	10
20	2
21	8
22	7
23	9
24	4
25	11
26	5
27	10
28	8
29	11
30	4
31	17
32	3
33	10
34	10
35	12
36	9
37	16
38	4
39	10
40	11
41	14
42	6
43	21
44	7
45	11
46	10
47	16
48	8
49	19
50	6
51	19
52	13
53	17
54	5
55	25
56	10
57	19
58	10
59	16
60	9
61	27
62	7
63	16
64	13
65	16
66	13
67	31
68	9
69	18
70	14
71	27
72	10
73	26
74	10
75	20
76	19
77	17
78	12
79	30