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 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 8 |
| 5 | 20 |
| 6 | 48 |
| 7 | 112 |
| 8 | 113 |
| 9 | 325 |
| 10 | 777 |
| 11 | 1737 |
| 12 | 3709 |
| 13 | 7741 |
| 14 | 15869 |
| 15 | 32253 |
| 16 | 32254 |
| 17 | 96538 |
| 18 | 225798 |
| 19 | 485702 |
| 20 | 1006338 |
| 21 | 2049602 |
| 22 | 4137346 |
| 23 | 8315266 |
| 24 | 16697102 |
| 25 | 33465934 |
| 26 | 67007886 |
| 27 | 134100366 |
| 28 | 268301518 |
| 29 | 536720590 |
| 30 | 1073575118 |
| 31 | 2147316942 |
| 32 | 2147316943 |
| 33 | 6441886323 |