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 | 9 |
| 2 | 83 |
| 3 | 298 |
| 4 | 1378 |
| 5 | 8878 |
| 6 | 29641 |
| 7 | 298141 |
| 8 | 623609 |
| 9 | 9321378 |
| 10 | 28072917 |
| 11 | 94121667 |
| 12 | 329877083 |
| 13 | 4341484641 |
| 14 | 29478276559 |
| 15 | 62360956378 |
| 16 | 151284113141 |
| 17 | 3436394751609 |
| 18 | 9428037062872 |
| 19 | 22065558748622 |
| 20 | 29770520349641 |
| 21 | 942808510191167 |
| 22 | 9427024391927083 |
| 23 | 22335822988837615 |
| 24 | 94270265131105359 |
| 25 | 298125621993127083 |