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.

A155575 Intersection of A000404 and A154778: N = a^2 + b^2 = c^2 + 5d^2 for some positive integers a,b,c,d.

Table of values

n a(n)
1 29
2 41
3 45
4 61
5 89
6 101
7 109
8 116
9 145
10 149
11 164
12 180
13 181
14 205
15 225
16 229
17 241
18 244
19 245
20 261
21 269
22 281
23 305
24 349
25 356
26 369
27 389
28 401
29 404
30 405
31 409
32 421
33 436
34 445
35 449
36 461
37 464
38 505
39 509
40 521
41 541
42 545
43 549
44 569
45 580
46 596
47 601
48 641
49 656
50 661
51 701
52 709
53 720

List of values

[29, 41, 45, 61, 89, 101, 109, 116, 145, 149, 164, 180, 181, 205, 225, 229, 241, 244, 245, 261, 269, 281, 305, 349, 356, 369, 389, 401, 404, 405, 409, 421, 436, 445, 449, 461, 464, 505, 509, 521, 541, 545, 549, 569, 580, 596, 601, 641, 656, 661, 701, 709, 720]