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 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 12 |
| 7 | 27 |
| 8 | 63 |
| 9 | 154 |
| 10 | 386 |
| 11 | 989 |
| 12 | 2574 |
| 13 | 6787 |
| 14 | 18085 |
| 15 | 48622 |
| 16 | 131719 |
| 17 | 359194 |
| 18 | 985186 |
| 19 | 2715973 |
| 20 | 7521568 |
| 21 | 20915257 |
| 22 | 58373587 |
| 23 | 163462816 |
| 24 | 459136810 |
| 25 | 1293223231 |
| 26 | 3651864607 |
| 27 | 10336625732 |
| 28 | 29321683083 |
| 29 | 83344398534 |
| 30 | 237344961292 |
| 31 | 677087183363 |
| 32 | 1934730432503 |