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 | 393 |
| 2 | 4145 |
| 3 | 23857 |
| 4 | 90609 |
| 5 | 263201 |
| 6 | 637393 |
| 7 | 1355145 |
| 8 | 2613857 |
| 9 | 4675609 |
| 10 | 7876401 |
| 11 | 12635393 |
| 12 | 19464145 |
| 13 | 28975857 |
| 14 | 41894609 |
| 15 | 59064601 |
| 16 | 81459393 |
| 17 | 110191145 |
| 18 | 146519857 |
| 19 | 191862609 |
| 20 | 247802801 |
| 21 | 316099393 |
| 22 | 398696145 |
| 23 | 497730857 |
| 24 | 615544609 |