A166049 - cp's OEIS frontend

A166049 Integers of the form 4n+1 for which Sum_{i=1..u} J(i,4n+1) is never negative for any u in range [1,(2n)], where J(i,k) is the Jacobi symbol.

n	a(n)
1	1
2	5
3	9
4	13
5	21
6	25
7	37
8	49
9	81
10	85
11	93
12	121
13	165
14	169
15	225
16	289
17	361
18	441
19	529
20	625
21	729
22	841
23	961
24	1089
25	1225
26	1369
27	1521
28	1681
29	1849
30	2025
31	2209
32	2401
33	2601
34	2809
35	3025
36	3249
37	3481
38	3721
39	3969
40	4225
41	4489
42	4761
43	5041
44	5329
45	5625
46	5929
47	6241

[1, 5, 9, 13, 21, 25, 37, 49, 81, 85, 93, 121, 165, 169, 225, 289, 361, 441, 529, 625, 729, 841, 961, 1089, 1225, 1369, 1521, 1681, 1849, 2025, 2209, 2401, 2601, 2809, 3025, 3249, 3481, 3721, 3969, 4225, 4489, 4761, 5041, 5329, 5625, 5929, 6241]

cp's OEIS Frontend

A166049 Integers of the form 4n+1 for which Sum_{i=1..u} J(i,4n+1) is never negative for any u in range [1,(2n)], where J(i,k) is the Jacobi symbol.

Table of values

List of values