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 | 1 |
| 2 | 4 |
| 3 | 6 |
| 4 | 12 |
| 5 | 34 |
| 6 | 54 |
| 7 | 60 |
| 8 | 61 |
| 9 | 73 |
| 10 | 148 |
| 11 | 349 |
| 12 | 552 |
| 13 | 649 |
| 14 | 967 |
| 15 | 1044 |
| 16 | 2521 |
| 17 | 4501 |
| 18 | 5721 |
| 19 | 6133 |
| 20 | 9052 |
| 21 | 9880 |
| 22 | 16126 |
| 23 | 16215 |
| 24 | 19146 |
| 25 | 61770 |