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.

A115430 Numbers k such that the concatenation of k with k+9 gives a square.

Table of values

n a(n)
1 216
2 287
3 515
4 675
5 1175
6 4320
7 82640
8 960795
9 1322312
10 4049591
11 16955015
12 34602080
13 171010235
14 181964891
15 183673467
16 187160072
17 321920055
18 326530616
19 328818032
20 343942560
21 470954312
22 526023432
23 528925616
24 534830855

List of values

[216, 287, 515, 675, 1175, 4320, 82640, 960795, 1322312, 4049591, 16955015, 34602080, 171010235, 181964891, 183673467, 187160072, 321920055, 326530616, 328818032, 343942560, 470954312, 526023432, 528925616, 534830855]