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 | 3 |
| 3 | 5 |
| 4 | 10 |
| 5 | 22 |
| 6 | 50 |
| 7 | 115 |
| 8 | 266 |
| 9 | 617 |
| 10 | 1433 |
| 11 | 3330 |
| 12 | 7740 |
| 13 | 17992 |
| 14 | 41825 |
| 15 | 97230 |
| 16 | 226031 |
| 17 | 525457 |
| 18 | 1221538 |
| 19 | 2839730 |
| 20 | 6601570 |
| 21 | 15346787 |
| 22 | 35676950 |
| 23 | 82938845 |
| 24 | 192809421 |
| 25 | 448227522 |
| 26 | 1042002568 |
| 27 | 2422362080 |
| 28 | 5631308625 |
| 29 | 13091204282 |
| 30 | 30433357675 |
| 31 | 70748973085 |
| 32 | 164471408186 |