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 | 2 |
| 3 | 22 |
| 4 | 141 |
| 5 | 171 |
| 6 | 202 |
| 7 | 333 |
| 8 | 2002 |
| 9 | 2772 |
| 10 | 7227 |
| 11 | 10401 |
| 12 | 10701 |
| 13 | 12221 |
| 14 | 13131 |
| 15 | 14841 |
| 16 | 15651 |
| 17 | 16461 |
| 18 | 17271 |
| 19 | 20002 |
| 20 | 21212 |
| 21 | 25452 |
| 22 | 26262 |
| 23 | 27072 |
| 24 | 30303 |
| 25 | 31113 |
| 26 | 33633 |
| 27 | 35253 |
| 28 | 41814 |
| 29 | 51615 |
| 30 | 52425 |
| 31 | 53235 |
| 32 | 55755 |
| 33 | 58185 |
| 34 | 61416 |
| 35 | 62226 |
| 36 | 66366 |
| 37 | 69696 |
| 38 | 71217 |
| 39 | 72027 |
| 40 | 85158 |
| 41 | 96669 |
| 42 | 117711 |