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 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 8 |
| 7 | 16 |
| 8 | 33 |
| 9 | 70 |
| 10 | 151 |
| 11 | 329 |
| 12 | 723 |
| 13 | 1601 |
| 14 | 3569 |
| 15 | 8000 |
| 16 | 18015 |
| 17 | 40723 |
| 18 | 92351 |
| 19 | 209997 |
| 20 | 478598 |
| 21 | 1092856 |
| 22 | 2499567 |
| 23 | 5724970 |
| 24 | 13128115 |
| 25 | 30135636 |
| 26 | 69238343 |
| 27 | 159202607 |
| 28 | 366308948 |
| 29 | 843338278 |
| 30 | 1942591448 |
| 31 | 4476714720 |
| 32 | 10320774953 |
| 33 | 23802355725 |
| 34 | 54911686727 |