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 | 86 |
| 2 | 1600 |
| 3 | 13347 |
| 4 | 74040 |
| 5 | 319156 |
| 6 | 1147712 |
| 7 | 3588729 |
| 8 | 10031780 |
| 9 | 25574524 |
| 10 | 60357024 |
| 11 | 133401811 |
| 12 | 278664144 |
| 13 | 554222764 |
| 14 | 1055811684 |
| 15 | 1936212233 |
| 16 | 3432395716 |
| 17 | 5902734700 |
| 18 | 9877089124 |
| 19 | 16123126195 |
| 20 | 25732854408 |
| 21 | 40234046052 |
| 22 | 61731993272 |