A387128 - cp's OEIS frontend

A387128 First numbers A = a(n) of two numbers (A, B) such that the sums 2*A^2 + B^2 = p == 3 mod 8, where p = A007520(n) and B = A387129(n).

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

[1, 1, 3, 3, 5, 3, 1, 7, 5, 3, 9, 7, 9, 1, 11, 9, 3, 9, 13, 3, 13, 1, 11, 5, 15, 9, 3, 13, 15, 17, 15, 3, 17, 11, 9, 15, 9, 15, 7, 3, 21, 21, 19, 11, 17, 21, 1, 9, 19, 21, 7, 25, 23, 15, 17, 13, 19, 27, 27, 23, 1, 9, 5, 27, 7, 27, 17, 3, 21, 27, 23, 19, 3, 29, 31, 25, 27, 31, 9, 1, 27]

cp's OEIS Frontend

A387128 First numbers A = a(n) of two numbers (A, B) such that the sums 2*A^2 + B^2 = p == 3 mod 8, where p = A007520(n) and B = A387129(n).

Table of values

List of values

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

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

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