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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 10 |
| 6 | 23 |
| 7 | 48 |
| 8 | 106 |
| 9 | 227 |
| 10 | 494 |
| 11 | 1065 |
| 12 | 2310 |
| 13 | 4991 |
| 14 | 10808 |
| 15 | 23376 |
| 16 | 50593 |
| 17 | 109455 |
| 18 | 236858 |
| 19 | 512479 |
| 20 | 1108924 |
| 21 | 2399418 |
| 22 | 5191853 |
| 23 | 11233929 |
| 24 | 24307777 |
| 25 | 52596430 |
| 26 | 113806948 |
| 27 | 246252376 |
| 28 | 532834797 |
| 29 | 1152933975 |
| 30 | 2494689316 |
| 31 | 5397944266 |
| 32 | 11679933875 |
| 33 | 25272740480 |
| 34 | 54684508281 |
| 35 | 118324934647 |