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 | 1 |
| 2 | 70 |
| 3 | 357 |
| 4 | 3366 |
| 5 | 7748 |
| 6 | 29597 |
| 7 | 51604 |
| 8 | 134113 |
| 9 | 203475 |
| 10 | 427344 |
| 11 | 596471 |
| 12 | 1094240 |
| 13 | 1444702 |
| 14 | 2413711 |
| 15 | 3062718 |
| 16 | 4778067 |
| 17 | 5884949 |
| 18 | 8712458 |
| 19 | 10485145 |
| 20 | 14894314 |
| 21 | 17595816 |
| 22 | 24172785 |
| 23 | 28127672 |
| 24 | 37588181 |
| 25 | 43189063 |
| 26 | 56391412 |
| 27 | 64105419 |
| 28 | 82063428 |
| 29 | 92438690 |
| 30 | 116334659 |