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 | 2 |
| 2 | 22 |
| 3 | 548 |
| 4 | 2884 |
| 5 | 18966 |
| 6 | 66378 |
| 7 | 241544 |
| 8 | 643048 |
| 9 | 1687850 |
| 10 | 3716830 |
| 11 | 7980972 |
| 12 | 15368172 |
| 13 | 28868798 |
| 14 | 50412754 |
| 15 | 86141456 |
| 16 | 139758928 |
| 17 | 222590034 |
| 18 | 341128998 |
| 19 | 514651700 |
| 20 | 753789460 |
| 21 | 1089386342 |
| 22 | 1537935322 |
| 23 | 2146429848 |
| 24 | 2939373624 |