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 | 153 |
| 3 | 2097 |
| 4 | 26496 |
| 5 | 319995 |
| 6 | 3749994 |
| 7 | 42999985 |
| 8 | 484999992 |
| 9 | 5399999991 |
| 10 | 59499999990 |
| 11 | 649999999935 |
| 12 | 7049999999988 |
| 13 | 75999999999924 |
| 14 | 814999999999941 |
| 15 | 8699999999999985 |
| 16 | 92499999999999984 |
| 17 | 979999999999999902 |