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.

A078355 Minimal (positive) solution a(n) of Pell equation b(n)^2 - D(n)*a(n)^2 = +4 with D(n)= A077425(n). The companion sequence is a(n)=A077428(n).

Table of values

n a(n)
1 1
2 3
3 16
4 1
5 5
6 8
7 24
8 640
9 1
10 7
11 40
12 195
13 32
14 3
15 534000
16 1
17 9
18 106000
19 3
20 12754704
21 40
22 8
23 6525
24 226592
25 1
26 11
27 2968
28 15
29 1039424
30 16
31 48
32 305
33 352
34 3621
35 1856
36 1
37 13
38 9384
39 126585
40 1360
41 8
42 896073208080
43 56
44 72664
45 3
46 6440
47 5
48 521904
49 1
50 15
51 140510608
52 5

List of values

[1, 3, 16, 1, 5, 8, 24, 640, 1, 7, 40, 195, 32, 3, 534000, 1, 9, 106000, 3, 12754704, 40, 8, 6525, 226592, 1, 11, 2968, 15, 1039424, 16, 48, 305, 352, 3621, 1856, 1, 13, 9384, 126585, 1360, 8, 896073208080, 56, 72664, 3, 6440, 5, 521904, 1, 15, 140510608, 5]