A144923 - cp's OEIS frontend

A144923 Triangle read by rows: |A144912(b, b^2 + k)| if it is prime and 0 otherwise, with rows b in {2, 4, 6, ...} and columns k in {0, 1, 3, 4, 6, 7, ..., b}.

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

[0, 0, 7, 5, 0, 5, 13, 11, 7, 5, 11, 19, 17, 13, 11, 7, 5, 0, 23, 19, 17, 13, 11, 7, 23, 31, 29, 0, 23, 19, 17, 13, 11, 29, 37, 0, 31, 29, 0, 23, 19, 17, 13, 11, 43, 41, 37, 0, 31, 29, 0, 23, 19, 17, 13, 41, 0, 47, 43, 41, 37, 0, 31, 29, 0, 23, 19, 17, 47]

cp's OEIS Frontend

A144923 Triangle read by rows: |A144912(b, b^2 + k)| if it is prime and 0 otherwise, with rows b in {2, 4, 6, ...} and columns k in {0, 1, 3, 4, 6, 7, ..., b}.

Table of values

List of values

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

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

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