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 | 16384 |
| 1 | 10000000 |
| 2 | 268435456 |
| 3 | 2494357888 |
| 4 | 13492928512 |
| 5 | 52523350144 |
| 6 | 163840000000 |
| 7 | 435817657216 |
| 8 | 1028071702528 |
| 9 | 2207984167552 |
| 10 | 4398046511104 |
| 11 | 8235430000000 |
| 12 | 14645194571776 |
| 13 | 24928547056768 |
| 14 | 40867559636992 |
| 15 | 64847759419264 |
| 16 | 100000000000000 |
| 17 | 150363025899136 |
| 18 | 221068140740608 |