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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 17 |
| 4 | 46 |
| 5 | 119 |
| 6 | 311 |
| 7 | 812 |
| 8 | 2118 |
| 9 | 5530 |
| 10 | 14431 |
| 11 | 37668 |
| 12 | 98313 |
| 13 | 256602 |
| 14 | 669742 |
| 15 | 1748052 |
| 16 | 4562490 |
| 17 | 11908280 |
| 18 | 31081099 |
| 19 | 81122927 |
| 20 | 211734137 |
| 21 | 552634698 |
| 22 | 1442399007 |
| 23 | 3764720003 |
| 24 | 9826072122 |
| 25 | 25646447377 |