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 | 2 |
| 3 | 4 |
| 4 | 7 |
| 5 | 13 |
| 6 | 24 |
| 7 | 44 |
| 8 | 77 |
| 9 | 139 |
| 10 | 250 |
| 11 | 450 |
| 12 | 788 |
| 13 | 1403 |
| 14 | 2498 |
| 15 | 4447 |
| 16 | 7782 |
| 17 | 13769 |
| 18 | 24363 |
| 19 | 43106 |
| 20 | 75396 |
| 21 | 132865 |
| 22 | 234171 |
| 23 | 412731 |
| 24 | 721433 |
| 25 | 1267901 |
| 26 | 2228666 |
| 27 | 3917654 |
| 28 | 6843596 |
| 29 | 12004150 |
| 30 | 21059478 |
| 31 | 36947904 |
| 32 | 64506130 |
| 33 | 112983428 |
| 34 | 197921386 |
| 35 | 346735329 |
| 36 | 605046571 |
| 37 | 1058544744 |
| 38 | 1852200487 |