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 | 11 |
| 3 | 176 |
| 4 | 3696 |
| 5 | 95986 |
| 6 | 2967041 |
| 7 | 106296586 |
| 8 | 4328071506 |
| 9 | 197304236151 |
| 10 | 9951699489061 |
| 11 | 550054365477936 |
| 12 | 33053174868315877 |
| 13 | 2144972900520659506 |
| 14 | 149472637758381213628 |
| 15 | 11130201727845695463914 |
| 16 | 881841184375010602801553 |
| 17 | 74061565980075915066583527 |