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 | 4 |
| 4 | 10 |
| 5 | 22 |
| 6 | 48 |
| 7 | 103 |
| 8 | 225 |
| 9 | 492 |
| 10 | 1076 |
| 11 | 2348 |
| 12 | 5124 |
| 13 | 11184 |
| 14 | 24417 |
| 15 | 53305 |
| 16 | 116366 |
| 17 | 254024 |
| 18 | 554534 |
| 19 | 1210554 |
| 20 | 2642656 |
| 21 | 5768943 |
| 22 | 12593649 |
| 23 | 27492040 |
| 24 | 60015368 |
| 25 | 131014088 |
| 26 | 286004920 |
| 27 | 624351264 |
| 28 | 1362964321 |
| 29 | 2975363169 |
| 30 | 6495244138 |
| 31 | 14179175436 |
| 32 | 30953265426 |