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 | 1 |
| 1 | 34 |
| 2 | 451 |
| 3 | 3380 |
| 4 | 17531 |
| 5 | 70466 |
| 6 | 235014 |
| 7 | 679722 |
| 8 | 1757085 |
| 9 | 4147792 |
| 10 | 9084361 |
| 11 | 18683314 |
| 12 | 36421463 |
| 13 | 67798940 |
| 14 | 121239308 |
| 15 | 209285436 |
| 16 | 350158809 |
| 17 | 569759574 |
| 18 | 904194895 |
| 19 | 1402934104 |
| 20 | 2132700691 |
| 21 | 3182223374 |
| 22 | 4667981330 |
| 23 | 6741092150 |
| 24 | 9595505205 |
| 25 | 13477677876 |
| 26 | 18697927509 |
| 27 | 25643668006 |
| 28 | 34794756655 |