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 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 13 |
| 6 | 32 |
| 7 | 70 |
| 8 | 179 |
| 9 | 435 |
| 10 | 1142 |
| 11 | 2947 |
| 12 | 7889 |
| 13 | 21051 |
| 14 | 57192 |
| 15 | 155661 |
| 16 | 427795 |
| 17 | 1179451 |
| 18 | 3271214 |
| 19 | 9102665 |
| 20 | 25434661 |
| 21 | 71282431 |
| 22 | 200406472 |
| 23 | 564905068 |
| 24 | 1596435581 |
| 25 | 4521772933 |
| 26 | 12835116530 |
| 27 | 36504093693 |
| 28 | 104012240063 |
| 29 | 296871993373 |
| 30 | 848694481664 |
| 31 | 2429882584254 |
| 32 | 6966789756243 |