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 | 5 |
| 2 | 505 |
| 3 | 525 |
| 4 | 545 |
| 5 | 565 |
| 6 | 585 |
| 7 | 5005 |
| 8 | 5225 |
| 9 | 5445 |
| 10 | 5665 |
| 11 | 5885 |
| 12 | 50005 |
| 13 | 50105 |
| 14 | 50205 |
| 15 | 50305 |
| 16 | 50405 |
| 17 | 50505 |
| 18 | 50605 |
| 19 | 50705 |
| 20 | 50805 |
| 21 | 50905 |
| 22 | 52025 |
| 23 | 52125 |
| 24 | 52225 |
| 25 | 52325 |
| 26 | 52425 |
| 27 | 52525 |
| 28 | 52625 |
| 29 | 52725 |
| 30 | 52825 |
| 31 | 52925 |
| 32 | 54045 |
| 33 | 54145 |
| 34 | 54245 |
| 35 | 54345 |
| 36 | 54445 |
| 37 | 54545 |
| 38 | 54645 |
| 39 | 54745 |
| 40 | 54845 |