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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 12 |
| 8 | 25 |
| 9 | 52 |
| 10 | 113 |
| 11 | 245 |
| 12 | 542 |
| 13 | 1205 |
| 14 | 2707 |
| 15 | 6113 |
| 16 | 13907 |
| 17 | 31780 |
| 18 | 73010 |
| 19 | 168399 |
| 20 | 389991 |
| 21 | 906231 |
| 22 | 2112742 |
| 23 | 4939689 |
| 24 | 11580640 |
| 25 | 27216387 |
| 26 | 64110091 |
| 27 | 151334814 |
| 28 | 357938832 |
| 29 | 848153045 |
| 30 | 2013190671 |
| 31 | 4786210412 |
| 32 | 11396004660 |
| 33 | 27172368314 |
| 34 | 64875527649 |