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 | 5 |
| 2 | 14 |
| 3 | 36 |
| 4 | 89 |
| 5 | 217 |
| 6 | 526 |
| 7 | 1272 |
| 8 | 3073 |
| 9 | 7421 |
| 10 | 17918 |
| 11 | 43260 |
| 12 | 104441 |
| 13 | 252145 |
| 14 | 608734 |
| 15 | 1469616 |
| 16 | 3547969 |
| 17 | 8565557 |
| 18 | 20679086 |
| 19 | 49923732 |
| 20 | 120526553 |
| 21 | 290976841 |
| 22 | 702480238 |
| 23 | 1695937320 |
| 24 | 4094354881 |
| 25 | 9884647085 |
| 26 | 23863649054 |
| 27 | 57611945196 |
| 28 | 139087539449 |
| 29 | 335787024097 |