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 | 472 |
| 2 | 10834 |
| 3 | 147984 |
| 4 | 1161050 |
| 5 | 6143828 |
| 6 | 25889916 |
| 7 | 89105036 |
| 8 | 265355962 |
| 9 | 703196860 |
| 10 | 1697573454 |
| 11 | 3791220900 |
| 12 | 7939541008 |
| 13 | 15724825316 |
| 14 | 29686208288 |
| 15 | 53758774120 |
| 16 | 93865133098 |
| 17 | 158683717456 |
| 18 | 260719421940 |
| 19 | 417432211296 |
| 20 | 652964625866 |