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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.

A068493 Primes which are concatenations of positive squares.

Table of values

n a(n)
1 11
2 19
3 41
4 149
5 181
6 191
7 199
8 251
9 419
10 449
11 491
12 499
13 641
14 811
15 911
16 919
17 941
18 991
19 1009
20 1181
21 1259
22 1289
23 1361
24 1481
25 1499
26 1619
27 1699
28 1811
29 1949
30 1999
31 2251
32 2549
33 2591
34 3691
35 4001
36 4111
37 4259
38 4289
39 4441
40 4481
41 4649
42 4729
43 4919
44 4999
45 6449
46 6481
47 6491

List of values

[11, 19, 41, 149, 181, 191, 199, 251, 419, 449, 491, 499, 641, 811, 911, 919, 941, 991, 1009, 1181, 1259, 1289, 1361, 1481, 1499, 1619, 1699, 1811, 1949, 1999, 2251, 2549, 2591, 3691, 4001, 4111, 4259, 4289, 4441, 4481, 4649, 4729, 4919, 4999, 6449, 6481, 6491]

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

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