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 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 11 |
| 8 | 23 |
| 9 | 47 |
| 10 | 103 |
| 11 | 226 |
| 12 | 518 |
| 13 | 1200 |
| 14 | 2867 |
| 15 | 6946 |
| 16 | 17234 |
| 17 | 43393 |
| 18 | 111418 |
| 19 | 290233 |
| 20 | 768819 |
| 21 | 2064637 |
| 22 | 5626757 |
| 23 | 15531220 |
| 24 | 43432402 |
| 25 | 122878654 |
| 26 | 351665399 |
| 27 | 1016952840 |
| 28 | 2970387672 |
| 29 | 8755225931 |
| 30 | 26027153206 |
| 31 | 77972236615 |
| 32 | 235260594303 |