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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.

A273163 P-defects p - N(p) of the congruence y^2 == x^3 + x^2 + 4*x + 4 (mod p) for primes p, where N(p) is the number of solutions given for p = prime(n) by A272207(n).

Table of values

n a(n)
1 0
2 -2
3 -1
4 2
5 0
6 2
7 -6
8 -4
9 6
10 6
11 -4
12 2
13 6
14 -10
15 -6
16 -6
17 12
18 2
19 2
20 -12
21 2
22 8
23 6
24 -6
25 2
26 6
27 14
28 -6
29 2
30 -6
31 2
32 0
33 18
34 -4
35 -6
36 20
37 -22
38 -10
39 18
40 -6
41 -12
42 -10
43 -12
44 26
45 18
46 8
47 -16
48 -10
49 -6
50 14
51 -6
52 -24
53 14
54 0
55 -6
56 -18
57 18
58 20
59 26
60 6

List of values

[0, -2, -1, 2, 0, 2, -6, -4, 6, 6, -4, 2, 6, -10, -6, -6, 12, 2, 2, -12, 2, 8, 6, -6, 2, 6, 14, -6, 2, -6, 2, 0, 18, -4, -6, 20, -22, -10, 18, -6, -12, -10, -12, 26, 18, 8, -16, -10, -6, 14, -6, -24, 14, 0, -6, -18, 18, 20, 26, 6]

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