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 | 2 |
| 3 | 101 |
| 4 | 174 |
| 5 | 211 |
| 6 | 249 |
| 7 | 257 |
| 8 | 1822 |
| 9 | 2070 |
| 10 | 20795 |
| 11 | 9531980 |
| 12 | 17880587 |
| 13 | 215198695 |
| 14 | 1702002467 |
| 15 | 167526192487 |
| 16 | 196759830168 |
| 17 | 2036493584526 |
| 18 | 17476134422427 |
| 19 | 82406037714600 |
| 20 | 170438376135142 |
| 21 | 181002188703854 |
| 22 | 189344689666188 |
| 23 | 213031868452710 |
| 24 | 10020895012660701 |
| 25 | 17108271682888342 |