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 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 8 |
| 8 | 37 |
| 9 | 130 |
| 10 | 386 |
| 11 | 1024 |
| 12 | 2510 |
| 13 | 5812 |
| 14 | 12911 |
| 15 | 27824 |
| 16 | 58651 |
| 17 | 121670 |
| 18 | 249528 |
| 19 | 507624 |
| 20 | 1026876 |
| 21 | 2069256 |
| 22 | 4158861 |
| 23 | 8344056 |
| 24 | 16721761 |
| 25 | 33486026 |
| 26 | 67025182 |
| 27 | 134116144 |
| 28 | 268313018 |
| 29 | 536724316 |
| 30 | 1073567387 |
| 31 | 2147277280 |
| 32 | 4294724471 |
| 33 | 8589650318 |
| 34 | 17179537972 |