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 | 363 |
| 2 | 637 |
| 3 | 714 |
| 4 | 923 |
| 5 | 8905 |
| 6 | 81818 |
| 7 | 336633 |
| 8 | 663367 |
| 9 | 7272727 |
| 10 | 76470589 |
| 11 | 333666333 |
| 12 | 405436668 |
| 13 | 428571429 |
| 14 | 447710185 |
| 15 | 454545454 |
| 16 | 473684211 |
| 17 | 526315789 |
| 18 | 545454546 |
| 19 | 552289815 |
| 20 | 571428571 |
| 21 | 594563332 |
| 22 | 666333667 |
| 23 | 692307693 |
| 24 | 711446449 |
| 25 | 762237762 |
| 26 | 834008097 |
| 27 | 859982123 |
| 28 | 879120879 |
| 29 | 902255640 |
| 30 | 974025975 |
| 31 | 980861244 |