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 | 13 |
| 2 | 202 |
| 3 | 2626 |
| 4 | 41104 |
| 5 | 564355 |
| 6 | 11333311 |
| 7 | 150666343 |
| 8 | 2322662122 |
| 9 | 33531600616 |
| 10 | 502544411644 |
| 11 | 10140043655335 |
| 12 | 132150634516021 |
| 13 | 2051322215344303 |
| 14 | 30030522136142242 |
| 15 | 420430421136212506 |
| 16 | 6066226105140066214 |