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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 10 |
| 12 | 65 |
| 13 | 285 |
| 14 | 1000 |
| 15 | 3002 |
| 16 | 8007 |
| 17 | 19447 |
| 18 | 43757 |
| 19 | 92377 |
| 20 | 184755 |
| 21 | 3527140 |
| 22 | 42031760 |
| 23 | 326057040 |
| 24 | 1961245375 |
| 25 | 9812764391 |
| 26 | 42530831916 |
| 27 | 164059546366 |
| 28 | 574224816166 |
| 29 | 1850302218766 |
| 30 | 5550936701311 |
| 31 | 156435448534980 |
| 32 | 2711548312208295 |