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 | 27 |
| 2 | 239 |
| 3 | 1193 |
| 4 | 4322 |
| 5 | 12964 |
| 6 | 32531 |
| 7 | 75114 |
| 8 | 155922 |
| 9 | 305362 |
| 10 | 557095 |
| 11 | 980755 |
| 12 | 1636154 |
| 13 | 2659934 |
| 14 | 4162116 |
| 15 | 6371316 |
| 16 | 9468167 |
| 17 | 13851960 |
| 18 | 19762261 |
| 19 | 27846149 |
| 20 | 38462192 |
| 21 | 52544085 |
| 22 | 70608666 |
| 23 | 94060846 |
| 24 | 123500085 |
| 25 | 160955964 |
| 26 | 207261711 |
| 27 | 265103651 |