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 | 0 |
| 3 | 1 |
| 4 | 4 |
| 5 | 6 |
| 6 | 5 |
| 7 | 9 |
| 8 | 28 |
| 9 | 57 |
| 10 | 82 |
| 11 | 122 |
| 12 | 249 |
| 13 | 519 |
| 14 | 913 |
| 15 | 1485 |
| 16 | 2632 |
| 17 | 5053 |
| 18 | 9369 |
| 19 | 16375 |
| 20 | 28662 |
| 21 | 52226 |
| 22 | 96182 |
| 23 | 173220 |
| 24 | 307653 |
| 25 | 551927 |
| 26 | 1002327 |
| 27 | 1815191 |
| 28 | 3258813 |
| 29 | 5845015 |
| 30 | 10539893 |
| 31 | 19048900 |
| 32 | 34332648 |
| 33 | 61735922 |
| 34 | 111129005 |
| 35 | 200406479 |
| 36 | 361364501 |
| 37 | 650804074 |
| 38 | 1171717523 |