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.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 41 |
| 2 | 161 |
| 3 | 361 |
| 4 | 641 |
| 5 | 1001 |
| 6 | 1441 |
| 7 | 1961 |
| 8 | 2561 |
| 9 | 3241 |
| 10 | 4001 |
| 11 | 4841 |
| 12 | 5761 |
| 13 | 6761 |
| 14 | 7841 |
| 15 | 9001 |
| 16 | 10241 |
| 17 | 11561 |
| 18 | 12961 |
| 19 | 14441 |
| 20 | 16001 |
| 21 | 17641 |
| 22 | 19361 |
| 23 | 21161 |
| 24 | 23041 |
| 25 | 25001 |
| 26 | 27041 |
| 27 | 29161 |
| 28 | 31361 |
| 29 | 33641 |
| 30 | 36001 |
| 31 | 38441 |
| 32 | 40961 |
| 33 | 43561 |
| 34 | 46241 |
| 35 | 49001 |
| 36 | 51841 |
| 37 | 54761 |
| 38 | 57761 |
| 39 | 60841 |
| 40 | 64001 |