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) |
|---|---|
| 0 | 5 |
| 1 | 51 |
| 2 | 515 |
| 3 | 5201 |
| 4 | 52525 |
| 5 | 530451 |
| 6 | 5357035 |
| 7 | 54100801 |
| 8 | 546365045 |
| 9 | 5517751251 |
| 10 | 55723877555 |
| 11 | 562756526801 |
| 12 | 5683289145565 |
| 13 | 57395647982451 |
| 14 | 579639768970075 |
| 15 | 5853793337683201 |
| 16 | 59117573145802085 |
| 17 | 597029524795704051 |