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 | 11 |
| 2 | 25658441 |
| 3 | 93625991 |
| 4 | 226449521 |
| 5 | 2843348351 |
| 6 | 4090833821 |
| 7 | 13421076281 |
| 8 | 18856092371 |
| 9 | 26092031081 |
| 10 | 54270148391 |
| 11 | 66449431661 |
| 12 | 111422173391 |
| 13 | 124168028051 |
| 14 | 280837571081 |
| 15 | 875319936761 |
| 16 | 1247050623431 |
| 17 | 3589081520021 |
| 18 | 6363702282011 |
| 19 | 7479508339601 |
| 20 | 10804857261041 |
| 21 | 15199582184861 |