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 | 3 |
| 1 | 1 |
| 2 | 5 |
| 3 | 10 |
| 4 | 21 |
| 5 | 46 |
| 6 | 98 |
| 7 | 211 |
| 8 | 453 |
| 9 | 973 |
| 10 | 2090 |
| 11 | 4489 |
| 12 | 9642 |
| 13 | 20710 |
| 14 | 44483 |
| 15 | 95545 |
| 16 | 205221 |
| 17 | 440794 |
| 18 | 946781 |
| 19 | 2033590 |
| 20 | 4367946 |
| 21 | 9381907 |
| 22 | 20151389 |
| 23 | 43283149 |
| 24 | 92967834 |
| 25 | 199685521 |
| 26 | 428904338 |
| 27 | 921243214 |
| 28 | 1978737411 |
| 29 | 4250128177 |
| 30 | 9128846213 |
| 31 | 19607839978 |
| 32 | 42115660581 |