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 | 3 |
| 3 | 6 |
| 4 | 15 |
| 5 | 28 |
| 6 | 66 |
| 7 | 122 |
| 8 | 266 |
| 9 | 503 |
| 10 | 1027 |
| 11 | 1913 |
| 12 | 3874 |
| 13 | 7099 |
| 14 | 13799 |
| 15 | 25501 |
| 16 | 48508 |
| 17 | 88295 |
| 18 | 165942 |
| 19 | 299649 |
| 20 | 554545 |
| 21 | 997281 |
| 22 | 1817984 |
| 23 | 3245430 |
| 24 | 5875438 |
| 25 | 10410768 |
| 26 | 18635587 |
| 27 | 32885735 |
| 28 | 58399350 |
| 29 | 102381103 |
| 30 | 180634057 |
| 31 | 314957425 |
| 32 | 551857780 |
| 33 | 958031826 |
| 34 | 1667918758 |