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.

A249589 Numbers whose square with initial (= leftmost) digit removed is a prime.

Table of values

n a(n)
1 5
2 17
3 19
4 21
5 23
6 27
7 29
8 31
9 33
10 39
11 49
12 51
13 53
14 69
15 71
16 77
17 79
18 87
19 91
20 97
21 143
22 147
23 151
24 157
25 159
26 163
27 171
28 173
29 187
30 191
31 199
32 201
33 229
34 231
35 233
36 239
37 241
38 243
39 247
40 251
41 267
42 279
43 283
44 293
45 297
46 301
47 321
48 333
49 351
50 357
51 363
52 369
53 381
54 393
55 423
56 447
57 449
58 453
59 457
60 463
61 467
62 469
63 471
64 477
65 483
66 491
67 493
68 501
69 511
70 517
71 523

List of values

[5, 17, 19, 21, 23, 27, 29, 31, 33, 39, 49, 51, 53, 69, 71, 77, 79, 87, 91, 97, 143, 147, 151, 157, 159, 163, 171, 173, 187, 191, 199, 201, 229, 231, 233, 239, 241, 243, 247, 251, 267, 279, 283, 293, 297, 301, 321, 333, 351, 357, 363, 369, 381, 393, 423, 447, 449, 453, 457, 463, 467, 469, 471, 477, 483, 491, 493, 501, 511, 517, 523]