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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.

A241246 Primes p such that the decimal expansion of its base 7 expansion converted to decimal is a square.

Table of values

n a(n)
1 13
2 19
3 139
4 313
5 433
6 571
7 883
8 1489
9 3547
10 10513
11 11779
12 14389
13 20011
14 25939
15 27763
16 30181
17 32353
18 42649
19 44617
20 45289
21 46309
22 47353
23 48787
24 55411
25 65269
26 65713
27 96331
28 111577
29 120763
30 129967
31 151717
32 157219
33 201997
34 216091
35 281947
36 292549
37 322537
38 339121
39 373987
40 397489
41 420349
42 432961
43 460417
44 475417
45 478531
46 506563
47 582433
48 591739
49 599479
50 753229
51 778357
52 857821
53 861139
54 887947
55 968419
56 1037089
57 1062361
58 1213651
59 1246249

List of values

[13, 19, 139, 313, 433, 571, 883, 1489, 3547, 10513, 11779, 14389, 20011, 25939, 27763, 30181, 32353, 42649, 44617, 45289, 46309, 47353, 48787, 55411, 65269, 65713, 96331, 111577, 120763, 129967, 151717, 157219, 201997, 216091, 281947, 292549, 322537, 339121, 373987, 397489, 420349, 432961, 460417, 475417, 478531, 506563, 582433, 591739, 599479, 753229, 778357, 857821, 861139, 887947, 968419, 1037089, 1062361, 1213651, 1246249]

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

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