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 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 15 |
| 7 | 22 |
| 8 | 37 |
| 9 | 81 |
| 10 | 210 |
| 11 | 550 |
| 12 | 1354 |
| 13 | 3096 |
| 14 | 6646 |
| 15 | 13655 |
| 16 | 27490 |
| 17 | 55523 |
| 18 | 114516 |
| 19 | 242652 |
| 20 | 525221 |
| 21 | 1147796 |
| 22 | 2504932 |
| 23 | 5423381 |
| 24 | 11627959 |
| 25 | 24732634 |
| 26 | 52379410 |
| 27 | 110882143 |
| 28 | 235293738 |
| 29 | 501101305 |
| 30 | 1070653949 |
| 31 | 2291969970 |
| 32 | 4908426206 |
| 33 | 10503741114 |
| 34 | 22448059156 |