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 | 20 |
| 2 | 400 |
| 3 | 4120 |
| 4 | 38144 |
| 5 | 382349 |
| 6 | 3997768 |
| 7 | 41429335 |
| 8 | 424457832 |
| 9 | 4346355560 |
| 10 | 44618565989 |
| 11 | 458351897996 |
| 12 | 4706379771012 |
| 13 | 48313078951832 |
| 14 | 495981142972847 |
| 15 | 5092092213139815 |
| 16 | 52279138123556110 |
| 17 | 536727196987498285 |