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 | 3 |
| 3 | 11 |
| 4 | 44 |
| 5 | 184 |
| 6 | 784 |
| 7 | 3363 |
| 8 | 14451 |
| 9 | 62097 |
| 10 | 266716 |
| 11 | 1145074 |
| 12 | 4914448 |
| 13 | 21087401 |
| 14 | 90472315 |
| 15 | 388129627 |
| 16 | 1665025084 |
| 17 | 7142592112 |
| 18 | 30639836360 |
| 19 | 131436162099 |
| 20 | 563822359859 |
| 21 | 2418629133001 |
| 22 | 10375190596724 |
| 23 | 44506436288882 |
| 24 | 190919170388912 |
| 25 | 818985577308225 |
| 26 | 3513200788519075 |