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.

A095102 Odd primes p for which all sums Sum_{i=1..u} L(i/p) (with u ranging from 1 to (p-1)) are nonnegative, where L(i/p) is Legendre symbol of i and p, defined to be 1 if i is a quadratic residue (mod p) and -1 if i is a quadratic non-residue (mod p).

Table of values

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

List of values

[3, 7, 11, 23, 31, 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]