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 | 16 |
| 2 | 64 |
| 3 | 255 |
| 4 | 968 |
| 5 | 3340 |
| 6 | 10320 |
| 7 | 28722 |
| 8 | 72920 |
| 9 | 171106 |
| 10 | 375388 |
| 11 | 777452 |
| 12 | 1532064 |
| 13 | 2891360 |
| 14 | 5253680 |
| 15 | 9231663 |
| 16 | 15745452 |
| 17 | 26148180 |
| 18 | 42392440 |
| 19 | 67248205 |
| 20 | 104584680 |
| 21 | 159730860 |
| 22 | 239932160 |
| 23 | 354923400 |
| 24 | 517641696 |
| 25 | 745106454 |
| 26 | 1059497716 |
| 27 | 1489468594 |