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 | 10301 |
| 3 | 1201021 |
| 4 | 3001003 |
| 5 | 10000900001 |
| 6 | 10002520001 |
| 7 | 10013131001 |
| 8 | 10111311101 |
| 9 | 10301110301 |
| 10 | 11012121011 |
| 11 | 11020302011 |
| 12 | 11030103011 |
| 13 | 11100500111 |
| 14 | 11120102111 |
| 15 | 12000500021 |
| 16 | 12110101121 |
| 17 | 13100100131 |
| 18 | 30000500003 |
| 19 | 30011111003 |
| 20 | 1000027200001 |
| 21 | 1000051500001 |