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 | 9 |
| 2 | 41 |
| 3 | 129 |
| 4 | 321 |
| 5 | 681 |
| 6 | 1289 |
| 7 | 2241 |
| 8 | 3649 |
| 9 | 5641 |
| 10 | 8361 |
| 11 | 11969 |
| 12 | 16641 |
| 13 | 22569 |
| 14 | 29961 |
| 15 | 39041 |
| 16 | 50049 |
| 17 | 63241 |
| 18 | 78889 |
| 19 | 97281 |
| 20 | 118721 |
| 21 | 143529 |
| 22 | 172041 |
| 23 | 204609 |
| 24 | 241601 |
| 25 | 283401 |
| 26 | 330409 |
| 27 | 383041 |
| 28 | 441729 |
| 29 | 506921 |
| 30 | 579081 |
| 31 | 658689 |
| 32 | 746241 |
| 33 | 842249 |
| 34 | 947241 |
| 35 | 1061761 |
| 36 | 1186369 |