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.

A155565 Intersection of A001481 and A020669: N = a^2 + b^2 = c^2 + 5d^2 for some integers a,b,c,d.

Table of values

n a(n)
1 0
2 1
3 4
4 5
5 9
6 16
7 20
8 25
9 29
10 36
11 41
12 45
13 49
14 61
15 64
16 80
17 81
18 89
19 100
20 101
21 109
22 116
23 121
24 125
25 144
26 145
27 149
28 164
29 169
30 180
31 181
32 196
33 205
34 225
35 229
36 241
37 244
38 245
39 256
40 261
41 269
42 281
43 289
44 305
45 320
46 324
47 349
48 356
49 361
50 369
51 389
52 400
53 401
54 404
55 405
56 409
57 421

List of values

[0, 1, 4, 5, 9, 16, 20, 25, 29, 36, 41, 45, 49, 61, 64, 80, 81, 89, 100, 101, 109, 116, 121, 125, 144, 145, 149, 164, 169, 180, 181, 196, 205, 225, 229, 241, 244, 245, 256, 261, 269, 281, 289, 305, 320, 324, 349, 356, 361, 369, 389, 400, 401, 404, 405, 409, 421]