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 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 17 |
| 5 | 42 |
| 6 | 106 |
| 7 | 272 |
| 8 | 708 |
| 9 | 1865 |
| 10 | 4963 |
| 11 | 13323 |
| 12 | 36037 |
| 13 | 98123 |
| 14 | 268737 |
| 15 | 739833 |
| 16 | 2046207 |
| 17 | 5682915 |
| 18 | 15842505 |
| 19 | 44315637 |
| 20 | 124348275 |
| 21 | 349911204 |
| 22 | 987212856 |
| 23 | 2791964574 |
| 24 | 7913642086 |
| 25 | 22477090679 |
| 26 | 63964370301 |
| 27 | 182353459733 |
| 28 | 520735012027 |
| 29 | 1489362193002 |
| 30 | 4266018891562 |
| 31 | 12236183875496 |
| 32 | 35142703099692 |
| 33 | 101055137177563 |