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 | 0 |
| 1 | 256 |
| 2 | 9841 |
| 3 | 131072 |
| 4 | 976562 |
| 5 | 5038848 |
| 6 | 20176803 |
| 7 | 67108864 |
| 8 | 193710244 |
| 9 | 500000000 |
| 10 | 1178973845 |
| 11 | 2579890176 |
| 12 | 5302249686 |
| 13 | 10330523392 |
| 14 | 19221679687 |
| 15 | 34359738368 |
| 16 | 59293938248 |
| 17 | 99179645184 |
| 18 | 161343848889 |
| 19 | 256000000000 |
| 20 | 397140023290 |
| 21 | 603634608896 |
| 22 | 900576330731 |
| 23 | 1320903770112 |
| 24 | 1907348632812 |
| 25 | 2714751839488 |