A378187 - cp's OEIS frontend

A378187 With p(n) = A002145(n) = n-th non-Pythagorean prime, a(n) is the least k such p(n) + k is a non-Pythagorean prime and 2 p(n) + k - 3 is a Pythagorean prime; and a(n) = 0 if there is no such k.

n	a(n)
1	4
2	12
3	12
4	12
5	24
6	12
7	24
8	12
9	12
10	36
11	12
12	24
13	48
14	24
15	60
16	12
17	48
18	72
19	12
20	36
21	192
22	12
23	60
24	24
25	12
26	48
27	12
28	12
29	108
30	48
31	60
32	24
33	72
34	72
35	168
36	36
37	24
38	12
39	84
40	48
41	24
42	48
43	108
44	24
45	24
46	36
47	12
48	12
49	12
50	24
51	60
52	48
53	60
54	156
55	48
56	60
57	84
58	12
59	24
60	60
61	84
62	12
63	84
64	36

[4, 12, 12, 12, 24, 12, 24, 12, 12, 36, 12, 24, 48, 24, 60, 12, 48, 72, 12, 36, 192, 12, 60, 24, 12, 48, 12, 12, 108, 48, 60, 24, 72, 72, 168, 36, 24, 12, 84, 48, 24, 48, 108, 24, 24, 36, 12, 12, 12, 24, 60, 48, 60, 156, 48, 60, 84, 12, 24, 60, 84, 12, 84, 36]

cp's OEIS Frontend

A378187 With p(n) = A002145(n) = n-th non-Pythagorean prime, a(n) is the least k such p(n) + k is a non-Pythagorean prime and 2 p(n) + k - 3 is a Pythagorean prime; and a(n) = 0 if there is no such k.

Table of values

List of values

n	a(n)
1	4
2	12
3	12
4	12
5	24
6	12
7	24
8	12
9	12
10	36
11	12
12	24
13	48
14	24
15	60
16	12
17	48
18	72
19	12
20	36
21	192
22	12
23	60
24	24
25	12
26	48
27	12
28	12
29	108
30	48
31	60
32	24
33	72
34	72
35	168
36	36
37	24
38	12
39	84
40	48
41	24
42	48
43	108
44	24
45	24
46	36
47	12
48	12
49	12
50	24
51	60
52	48
53	60
54	156
55	48
56	60
57	84
58	12
59	24
60	60
61	84
62	12
63	84
64	36

n	a(n)
1	4
2	12
3	12
4	12
5	24
6	12
7	24
8	12
9	12
10	36
11	12
12	24
13	48
14	24
15	60
16	12
17	48
18	72
19	12
20	36
21	192
22	12
23	60
24	24
25	12
26	48
27	12
28	12
29	108
30	48
31	60
32	24
33	72
34	72
35	168
36	36
37	24
38	12
39	84
40	48
41	24
42	48
43	108
44	24
45	24
46	36
47	12
48	12
49	12
50	24
51	60
52	48
53	60
54	156
55	48
56	60
57	84
58	12
59	24
60	60
61	84
62	12
63	84
64	36

n	a(n)
1	4
2	12
3	12
4	12
5	24
6	12
7	24
8	12
9	12
10	36
11	12
12	24
13	48
14	24
15	60
16	12
17	48
18	72
19	12
20	36
21	192
22	12
23	60
24	24
25	12
26	48
27	12
28	12
29	108
30	48
31	60
32	24
33	72
34	72
35	168
36	36
37	24
38	12
39	84
40	48
41	24
42	48
43	108
44	24
45	24
46	36
47	12
48	12
49	12
50	24
51	60
52	48
53	60
54	156
55	48
56	60
57	84
58	12
59	24
60	60
61	84
62	12
63	84
64	36