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 | 8448 |
| 2 | 46464 |
| 3 | 65856 |
| 4 | 69696 |
| 5 | 255552 |
| 6 | 426624 |
| 7 | 639936 |
| 8 | 2346432 |
| 9 | 21544512 |
| 10 | 28898289882 |
| 11 | 422868868224 |
| 12 | 475119911574 |
| 13 | 2323896983232 |
| 14 | 2325778775232 |
| 15 | 2578986898752 |
| 16 | 4362464642634 |
| 17 | 5269476749625 |
| 18 | 21337599573312 |
| 19 | 21354877845312 |
| 20 | 23487999978432 |
| 21 | 23679788797632 |