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 | 0 |
| 2 | 1 |
| 3 | 17 |
| 4 | 31 |
| 5 | 177 |
| 6 | 274 |
| 7 | 280 |
| 8 | 301 |
| 9 | 313 |
| 10 | 1777 |
| 11 | 2764 |
| 12 | 3001 |
| 13 | 27259 |
| 14 | 30001 |
| 15 | 177237 |
| 16 | 300001 |
| 17 | 312208 |
| 18 | 1762122 |
| 19 | 3000001 |
| 20 | 27515125 |
| 21 | 30000001 |
| 22 | 30122098 |
| 23 | 300000001 |
| 24 | 303758458 |
| 25 | 2673533185 |
| 26 | 2817818390 |
| 27 | 3000000001 |
| 28 | 3121001208 |
| 29 | 26928832879 |
| 30 | 28255878334 |
| 31 | 30000000001 |