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 | 2097152 |
| 1 | 410338673 |
| 2 | 8031810176 |
| 3 | 64339296875 |
| 4 | 319277809664 |
| 5 | 1174711139837 |
| 6 | 3521614606208 |
| 7 | 9095120158391 |
| 8 | 20971520000000 |
| 9 | 44231334895529 |
| 10 | 86812553324672 |
| 11 | 160578147647843 |
| 12 | 282621973446656 |
| 13 | 476837158203125 |
| 14 | 775771085481344 |
| 15 | 1222791080775407 |
| 16 | 1874584905187328 |