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 | 8 |
| 3 | 38 |
| 4 | 144 |
| 5 | 487 |
| 6 | 1552 |
| 7 | 4796 |
| 8 | 14592 |
| 9 | 44061 |
| 10 | 132568 |
| 11 | 398210 |
| 12 | 1195280 |
| 13 | 3586659 |
| 14 | 10760992 |
| 15 | 32284216 |
| 16 | 96854144 |
| 17 | 290564217 |
| 18 | 871694760 |
| 19 | 2615086750 |
| 20 | 7845263120 |
| 21 | 23535792671 |
| 22 | 70607381808 |