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 | 3 |
| 3 | 6 |
| 4 | 19 |
| 5 | 34 |
| 6 | 114 |
| 7 | 204 |
| 8 | 376 |
| 9 | 609 |
| 10 | 2253 |
| 11 | 3573 |
| 12 | 12514 |
| 13 | 21160 |
| 14 | 34839 |
| 15 | 54311 |
| 16 | 209489 |
| 17 | 327884 |
| 18 | 1157266 |
| 19 | 1900261 |
| 20 | 3060772 |
| 21 | 4760209 |
| 22 | 18553192 |
| 23 | 28734204 |
| 24 | 46515286 |
| 25 | 70750097 |
| 26 | 106748769 |
| 27 | 155242841 |