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.

A076439 Numbers k which appear to have a unique representation as the difference of two perfect powers where those powers are both 2; that is, there is only one solution to Pillai's equation a^x - b^y = k, with a > 0, b > 0, x > 1, y > 1 and that solution has x = y = 2.

Table of values

n a(n)
1 29
2 43
3 52
4 59
5 173
6 181
7 263
8 283
9 317
10 332
11 347
12 349
13 361
14 379
15 383
16 419
17 428
18 436
19 461
20 467
21 479
22 484
23 491
24 509
25 523
26 529
27 569
28 571
29 607
30 613
31 619
32 641
33 643
34 653
35 661
36 677
37 691
38 709
39 733
40 773
41 787
42 788
43 811
44 827
45 839
46 853
47 877
48 881
49 883
50 907
51 911
52 941

List of values

[29, 43, 52, 59, 173, 181, 263, 283, 317, 332, 347, 349, 361, 379, 383, 419, 428, 436, 461, 467, 479, 484, 491, 509, 523, 529, 569, 571, 607, 613, 619, 641, 643, 653, 661, 677, 691, 709, 733, 773, 787, 788, 811, 827, 839, 853, 877, 881, 883, 907, 911, 941]

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

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