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) |
|---|---|
| 1 | 13 |
| 2 | 169 |
| 3 | 621 |
| 4 | 2200 |
| 5 | 6766 |
| 6 | 17763 |
| 7 | 46199 |
| 8 | 110732 |
| 9 | 257118 |
| 10 | 582114 |
| 11 | 1274558 |
| 12 | 2750932 |
| 13 | 5820516 |
| 14 | 12139129 |
| 15 | 25026151 |
| 16 | 50987441 |
| 17 | 102961663 |
| 18 | 206146550 |
| 19 | 409655636 |
| 20 | 808788667 |
| 21 | 1587088299 |
| 22 | 3097694214 |
| 23 | 6016346686 |
| 24 | 11632341504 |
| 25 | 22398414558 |