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) |
|---|---|
| 1 | 0 |
| 2 | 132 |
| 3 | 2295 |
| 4 | 2859 |
| 5 | 3535 |
| 6 | 15792 |
| 7 | 19060 |
| 8 | 22984 |
| 9 | 94363 |
| 10 | 113407 |
| 11 | 136275 |
| 12 | 552292 |
| 13 | 663288 |
| 14 | 796572 |
| 15 | 3221295 |
| 16 | 3868227 |
| 17 | 4645063 |
| 18 | 18777384 |
| 19 | 22547980 |
| 20 | 27075712 |
| 21 | 109444915 |
| 22 | 131421559 |
| 23 | 157811115 |
| 24 | 637894012 |
| 25 | 765983280 |
| 26 | 919792884 |
| 27 | 3717921063 |