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 | 12 |
| 2 | 77 |
| 3 | 352 |
| 4 | 1287 |
| 5 | 4004 |
| 6 | 11011 |
| 7 | 27456 |
| 8 | 63206 |
| 9 | 136136 |
| 10 | 277134 |
| 11 | 537472 |
| 12 | 999362 |
| 13 | 1790712 |
| 14 | 3105322 |
| 15 | 5230016 |
| 16 | 8580495 |
| 17 | 13748020 |
| 18 | 21559395 |
| 19 | 33153120 |
| 20 | 50075025 |
| 21 | 74397180 |
| 22 | 108864405 |
| 23 | 157073280 |
| 24 | 223689180 |
| 25 | 314707536 |
| 26 | 437766252 |
| 27 | 602516992 |
| 28 | 821063892 |
| 29 | 1108479152 |