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 | 1 |
| 2 | 4 |
| 3 | 13 |
| 4 | 19 |
| 5 | 44 |
| 6 | 141 |
| 7 | 195 |
| 8 | 199 |
| 9 | 424 |
| 10 | 1955 |
| 11 | 1995 |
| 12 | 1999 |
| 13 | 14141 |
| 14 | 19955 |
| 15 | 19995 |
| 16 | 19999 |
| 17 | 42473 |
| 18 | 44741 |
| 19 | 47138 |
| 20 | 199955 |
| 21 | 199995 |
| 22 | 199999 |
| 23 | 1999955 |
| 24 | 1999995 |
| 25 | 1999999 |
| 26 | 4713620 |
| 27 | 19999955 |
| 28 | 19999995 |
| 29 | 19999999 |
| 30 | 199999955 |
| 31 | 199999995 |
| 32 | 199999999 |