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 | 13 |
| 2 | 160 |
| 3 | 213 |
| 4 | 280 |
| 5 | 1113 |
| 6 | 1420 |
| 7 | 1809 |
| 8 | 6660 |
| 9 | 8449 |
| 10 | 10716 |
| 11 | 38989 |
| 12 | 49416 |
| 13 | 62629 |
| 14 | 227416 |
| 15 | 288189 |
| 16 | 365200 |
| 17 | 1325649 |
| 18 | 1679860 |
| 19 | 2128713 |
| 20 | 7726620 |
| 21 | 9791113 |
| 22 | 12407220 |
| 23 | 45034213 |
| 24 | 57066960 |
| 25 | 72314749 |
| 26 | 262478800 |
| 27 | 332610789 |
| 28 | 421481416 |
| 29 | 1529838729 |
| 30 | 1938597916 |
| 31 | 2456573889 |