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 | 17 |
| 1 | 10 |
| 2 | 58 |
| 3 | 274 |
| 4 | 901 |
| 5 | 3277 |
| 6 | 12402 |
| 7 | 46282 |
| 8 | 171170 |
| 9 | 635953 |
| 10 | 2364489 |
| 11 | 8785386 |
| 12 | 32637202 |
| 13 | 121265666 |
| 14 | 450571589 |
| 15 | 1674090725 |
| 16 | 6220049810 |
| 17 | 23110593298 |
| 18 | 85867345570 |
| 19 | 319039636721 |
| 20 | 1185390110881 |
| 21 | 4404311472106 |
| 22 | 16364198176874 |