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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 5 |
| 7 | 7 |
| 8 | 80 |
| 9 | 154 |
| 10 | 191 |
| 11 | 209 |
| 12 | 910 |
| 13 | 3740 |
| 14 | 5740 |
| 15 | 8281 |
| 16 | 16562 |
| 17 | 16814 |
| 18 | 2295481 |
| 19 | 2300665 |
| 20 | 2350165 |
| 21 | 2439445 |
| 22 | 2488945 |
| 23 | 2494129 |
| 24 | 2515513 |
| 25 | 7971580 |
| 26 | 48307924 |
| 27 | 61281793 |
| 28 | 69432517 |
| 29 | 123427622 |
| 30 | 124091822 |
| 31 | 124443290 |
| 32 | 55854298990 |
| 33 | 184314116750 |
| 34 | 185794441250 |
| 35 | 187195815770 |
| 36 | 327925630018 |
| 37 | 7264479038060 |
| 38 | 27832011695551 |