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 | 3 |
| 2 | 13 |
| 3 | 44 |
| 4 | 134 |
| 5 | 356 |
| 6 | 876 |
| 7 | 1966 |
| 8 | 4146 |
| 9 | 8236 |
| 10 | 15592 |
| 11 | 28252 |
| 12 | 49357 |
| 13 | 83377 |
| 14 | 136837 |
| 15 | 218728 |
| 16 | 341554 |
| 17 | 522064 |
| 18 | 782810 |
| 19 | 1153180 |
| 20 | 1671698 |
| 21 | 2387568 |
| 22 | 3363738 |
| 23 | 4679208 |
| 24 | 6433183 |
| 25 | 8748119 |
| 26 | 11775343 |
| 27 | 15699188 |
| 28 | 20744108 |
| 29 | 27180308 |
| 30 | 35332850 |
| 31 | 45588746 |