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 | 0 |
| 1 | 8 |
| 2 | 70 |
| 3 | 360 |
| 4 | 1292 |
| 5 | 3640 |
| 6 | 8658 |
| 7 | 18200 |
| 8 | 34840 |
| 9 | 61992 |
| 10 | 104030 |
| 11 | 166408 |
| 12 | 255780 |
| 13 | 380120 |
| 14 | 548842 |
| 15 | 772920 |
| 16 | 1065008 |
| 17 | 1439560 |
| 18 | 1912950 |
| 19 | 2503592 |
| 20 | 3232060 |
| 21 | 4121208 |
| 22 | 5196290 |
| 23 | 6485080 |
| 24 | 8017992 |
| 25 | 9828200 |
| 26 | 11951758 |
| 27 | 14427720 |
| 28 | 17298260 |
| 29 | 20608792 |
| 30 | 24408090 |
| 31 | 28748408 |