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.

A257649 Squares that are the concatenation of two integers (without leading zeros) the sum of which is also a square.

Table of values

n a(n)
1 36
2 81
3 169
4 196
5 324
6 361
7 576
8 729
9 841
10 1156
11 1521
12 1681
13 1764
14 2809
15 3249
16 3481
17 4356
18 5625
19 6084
20 6241
21 6724
22 7396
23 7569
24 7744
25 7921
26 8281
27 9216
28 12321
29 12544
30 12769
31 12996
32 13689
33 15129
34 16384
35 17424
36 18769
37 19881
38 24964
39 25600
40 31684
41 32041
42 34596
43 36864
44 38416
45 39601

List of values

[36, 81, 169, 196, 324, 361, 576, 729, 841, 1156, 1521, 1681, 1764, 2809, 3249, 3481, 4356, 5625, 6084, 6241, 6724, 7396, 7569, 7744, 7921, 8281, 9216, 12321, 12544, 12769, 12996, 13689, 15129, 16384, 17424, 18769, 19881, 24964, 25600, 31684, 32041, 34596, 36864, 38416, 39601]

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

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