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 | 32 |
| 2 | 527 |
| 3 | 5952 |
| 4 | 51831 |
| 5 | 370976 |
| 6 | 2271896 |
| 7 | 12237280 |
| 8 | 59146604 |
| 9 | 260441632 |
| 10 | 1057250877 |
| 11 | 3994502272 |
| 12 | 14156055636 |
| 13 | 47361532160 |
| 14 | 150411609649 |
| 15 | 455543049760 |
| 16 | 1321024921186 |
| 17 | 3680779823776 |
| 18 | 9884216117666 |
| 19 | 25650056954016 |