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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 10 |
| 6 | 22 |
| 7 | 64 |
| 8 | 159 |
| 9 | 328 |
| 10 | 747 |
| 11 | 1914 |
| 12 | 4608 |
| 13 | 10252 |
| 14 | 23339 |
| 15 | 55405 |
| 16 | 128034 |
| 17 | 287855 |
| 18 | 660549 |
| 19 | 1541383 |
| 20 | 3528645 |
| 21 | 7921187 |
| 22 | 17870633 |
| 23 | 40689873 |
| 24 | 92248847 |
| 25 | 207911243 |
| 26 | 469331387 |
| 27 | 1059603243 |
| 28 | 2377923972 |
| 29 | 5313383490 |
| 30 | 11889346697 |
| 31 | 26641635997 |
| 32 | 59560543885 |