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.

A345645 Numbers whose square can be represented in exactly one way as the sum of a square and a biquadrate (fourth power).

Table of values

n a(n)
1 5
2 15
3 20
4 34
5 39
6 41
7 45
8 60
9 80
10 85
11 111
12 125
13 135
14 136
15 150
16 156
17 164
18 175
19 180
20 194
21 219
22 240
23 245
24 255
25 265
26 306
27 313
28 320
29 325
30 340
31 351
32 353
33 369
34 371
35 375
36 405
37 410
38 444
39 445
40 455
41 500
42 505
43 514
44 540
45 544
46 600
47 605
48 609
49 624
50 629
51 656
52 671
53 674
54 689

List of values

[5, 15, 20, 34, 39, 41, 45, 60, 80, 85, 111, 125, 135, 136, 150, 156, 164, 175, 180, 194, 219, 240, 245, 255, 265, 306, 313, 320, 325, 340, 351, 353, 369, 371, 375, 405, 410, 444, 445, 455, 500, 505, 514, 540, 544, 600, 605, 609, 624, 629, 656, 671, 674, 689]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.