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 | 10 |
| 4 | 13 |
| 5 | 88 |
| 6 | 277 |
| 7 | 365 |
| 8 | 642 |
| 9 | 1649 |
| 10 | 2291 |
| 11 | 3940 |
| 12 | 6231 |
| 13 | 10171 |
| 14 | 36744 |
| 15 | 377611 |
| 16 | 414355 |
| 17 | 791966 |
| 18 | 1206321 |
| 19 | 3204608 |
| 20 | 4410929 |
| 21 | 7615537 |
| 22 | 12026466 |
| 23 | 19642003 |
| 24 | 70952475 |
| 25 | 161546953 |
| 26 | 555593334 |
| 27 | 717140287 |
| 28 | 9878417065 |
| 29 | 69866059742 |
| 30 | 289342656033 |