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 | 110 |
| 2 | 1152 |
| 3 | 43940 |
| 4 | 387488 |
| 5 | 2582406 |
| 6 | 11447368 |
| 7 | 44452660 |
| 8 | 139623544 |
| 9 | 400150926 |
| 10 | 1002628764 |
| 11 | 2352502608 |
| 12 | 5078891508 |
| 13 | 10430306882 |
| 14 | 20141675148 |
| 15 | 37480145240 |
| 16 | 66683720948 |
| 17 | 115148012058 |
| 18 | 192026426768 |
| 19 | 312626222120 |
| 20 | 495163608752 |