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 | 21 |
| 2 | 1041 |
| 3 | 1051 |
| 4 | 1061 |
| 5 | 1071 |
| 6 | 1081 |
| 7 | 1091 |
| 8 | 107209 |
| 9 | 108429 |
| 10 | 109803 |
| 11 | 10715097 |
| 12 | 10854691 |
| 13 | 10904639 |
| 14 | 10904731 |
| 15 | 10904731 |
| 16 | 10904731 |
| 17 | 10904731 |
| 18 | 10983831 |
| 19 | 11002311 |
| 20 | 11002311 |
| 21 | 11002311 |
| 22 | 1078112970 |
| 23 | 1078122970 |