cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A080114 Odd primes p for which all sums Sum_{j=1..u} L(j/p) (with u ranging from 1 to (p-1)/2) are nonnegative, where L(j/p) is Legendre symbol of j and p.

Table of values

n a(n)
1 3
2 5
3 7
4 11
5 13
6 23
7 31
8 37
9 47
10 59
11 71
12 79
13 83
14 103
15 131
16 151
17 167
18 191
19 199
20 239
21 251
22 263
23 271
24 311
25 359
26 383
27 419
28 431
29 439
30 479
31 503
32 563
33 599
34 607
35 647
36 659
37 719
38 743
39 751
40 839
41 863
42 887
43 911
44 919
45 971
46 983
47 991
48 1031
49 1039
50 1063
51 1091
52 1103
53 1151
54 1223

List of values

[3, 5, 7, 11, 13, 23, 31, 37, 47, 59, 71, 79, 83, 103, 131, 151, 167, 191, 199, 239, 251, 263, 271, 311, 359, 383, 419, 431, 439, 479, 503, 563, 599, 607, 647, 659, 719, 743, 751, 839, 863, 887, 911, 919, 971, 983, 991, 1031, 1039, 1063, 1091, 1103, 1151, 1223]