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 | 1 |
| 2 | 31 |
| 3 | 241 |
| 4 | 1021 |
| 5 | 3121 |
| 6 | 7771 |
| 7 | 16801 |
| 8 | 32761 |
| 9 | 59041 |
| 10 | 99991 |
| 11 | 161041 |
| 12 | 248821 |
| 13 | 371281 |
| 14 | 537811 |
| 15 | 759361 |
| 16 | 1048561 |
| 17 | 1419841 |
| 18 | 1889551 |
| 19 | 2476081 |
| 20 | 3199981 |
| 21 | 4084081 |
| 22 | 5153611 |
| 23 | 6436321 |
| 24 | 7962601 |
| 25 | 9765601 |
| 26 | 11881351 |
| 27 | 14348881 |
| 28 | 17210341 |
| 29 | 20511121 |
| 30 | 24299971 |
| 31 | 28629121 |
| 32 | 33554401 |
| 33 | 39135361 |
| 34 | 45435391 |