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 | 81 |
| 2 | 793 |
| 3 | 2980 |
| 4 | 7927 |
| 5 | 17929 |
| 6 | 36845 |
| 7 | 71061 |
| 8 | 130767 |
| 9 | 231730 |
| 10 | 397675 |
| 11 | 663404 |
| 12 | 1078800 |
| 13 | 1713877 |
| 14 | 2665051 |
| 15 | 4062821 |
| 16 | 6081063 |
| 17 | 8948154 |
| 18 | 12960157 |
| 19 | 18496312 |
| 20 | 26037092 |
| 21 | 36185097 |
| 22 | 49689073 |
| 23 | 67471357 |
| 24 | 90659063 |
| 25 | 120619338 |
| 26 | 158999031 |
| 27 | 207769132 |