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 | 36363636362 |
| 2 | 45454545453 |
| 3 | 54545454544 |
| 4 | 63636363635 |
| 5 | 72727272726 |
| 6 | 81818181817 |
| 7 | 90909090908 |
| 8 | 428571428571428571427 |
| 9 | 571428571428571428570 |
| 10 | 714285714285714285713 |
| 11 | 857142857142857142856 |
| 12 | 363636363636363636363636363636362 |
| 13 | 454545454545454545454545454545453 |