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 | 64 |
| 2 | 972 |
| 3 | 4636 |
| 4 | 13440 |
| 5 | 31710 |
| 6 | 68282 |
| 7 | 139638 |
| 8 | 275766 |
| 9 | 530583 |
| 10 | 999049 |
| 11 | 1844709 |
| 12 | 3342831 |
| 13 | 5946316 |
| 14 | 10384152 |
| 15 | 17805490 |
| 16 | 29986574 |
| 17 | 49622914 |
| 18 | 80735424 |
| 19 | 129226948 |
| 20 | 203634878 |
| 21 | 316136662 |
| 22 | 483878162 |
| 23 | 730710330 |
| 24 | 1089437826 |
| 25 | 1604704333 |