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 | 16 |
| 2 | 128 |
| 3 | 688 |
| 4 | 2746 |
| 5 | 8752 |
| 6 | 23536 |
| 7 | 55568 |
| 8 | 118498 |
| 9 | 232976 |
| 10 | 428752 |
| 11 | 747056 |
| 12 | 1243258 |
| 13 | 1989808 |
| 14 | 3079456 |
| 15 | 4628752 |
| 16 | 6781826 |
| 17 | 9714448 |
| 18 | 13638368 |
| 19 | 18805936 |
| 20 | 25515002 |
| 21 | 34114096 |
| 22 | 45007888 |
| 23 | 58662928 |
| 24 | 75613666 |
| 25 | 96468752 |
| 26 | 121917616 |
| 27 | 152737328 |
| 28 | 189799738 |
| 29 | 234078896 |