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) |
|---|---|
| 2 | 9 |
| 3 | 1 |
| 4 | 997 |
| 5 | 6 |
| 6 | 7 |
| 7 | 994 |
| 8 | 9999993 |
| 9 | 1 |
| 10 | 1 |
| 11 | 999981 |
| 12 | 1 |
| 13 | 9999999961 |
| 14 | 951 |
| 15 | 961 |
| 16 | 9999931 |
| 17 | 999999999999921 |
| 18 | 1 |
| 19 | 1 |
| 20 | 99999999801 |
| 21 | 1 |
| 22 | 99999999999999601 |
| 23 | 99501 |
| 24 | 99601 |
| 25 | 99999999301 |
| 26 | 99999999999999999999201 |
| 27 | 1 |
| 28 | 1 |
| 29 | 9999999999998001 |
| 30 | 1 |
| 31 | 999999999999999999996001 |
| 32 | 9995001 |
| 33 | 9996001 |