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.

A048941 a(n) is twice the coefficient of 1 in the fundamental unit of Q(sqrt(A000037(n))) where A000037 lists the nonsquare numbers (Version 1).

Table of values

n a(n)
1 2
2 4
3 1
4 10
5 16
6 2
7 6
8 20
9 4
10 3
11 30
12 8
13 8
14 34
15 340
16 4
17 5
18 394
19 48
20 10
21 10
22 52
23 16
24 5
25 22
26 3040
27 6
28 46
29 70
30 12
31 12
32 74
33 50
34 6
35 64
36 26
37 6964
38 20
39 7
40 48670
41 96
42 14
43 14
44 100
45 36
46 7
47 970
48 178
49 30
50 302
51 198
52 1060
53 8
54 39
55 126
56 16
57 16
58 130
59 97684
60 8
61 25
62 502
63 6960
64 34

List of values

[2, 4, 1, 10, 16, 2, 6, 20, 4, 3, 30, 8, 8, 34, 340, 4, 5, 394, 48, 10, 10, 52, 16, 5, 22, 3040, 6, 46, 70, 12, 12, 74, 50, 6, 64, 26, 6964, 20, 7, 48670, 96, 14, 14, 100, 36, 7, 970, 178, 30, 302, 198, 1060, 8, 39, 126, 16, 16, 130, 97684, 8, 25, 502, 6960, 34]