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 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 82 |
| 4 | 1499 |
| 5 | 37476 |
| 6 | 1200705 |
| 7 | 46990952 |
| 8 | 2175619923 |
| 9 | 116400215521 |
| 10 | 7069820334023 |
| 11 | 480722969498938 |
| 12 | 36186340018129392 |
| 13 | 2987845924408179654 |
| 14 | 268530017303221572650 |
| 15 | 26098422892000807053155 |
| 16 | 2727654868575748827350403 |
| 17 | 305075571192329680642519141 |