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 | 71 |
| 2 | 197 |
| 3 | 545 |
| 4 | 1501 |
| 5 | 4145 |
| 6 | 11441 |
| 7 | 31577 |
| 8 | 87161 |
| 9 | 240581 |
| 10 | 664051 |
| 11 | 1832917 |
| 12 | 5059221 |
| 13 | 13964475 |
| 14 | 38544783 |
| 15 | 106391413 |
| 16 | 293661867 |
| 17 | 810566283 |
| 18 | 2237327253 |
| 19 | 6175476757 |
| 20 | 17045567707 |
| 21 | 47049222251 |
| 22 | 129865390965 |
| 23 | 358454804639 |
| 24 | 989407924729 |