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 | 1 |
| 1 | 32 |
| 2 | 256 |
| 3 | 1408 |
| 4 | 6144 |
| 5 | 22976 |
| 6 | 76800 |
| 7 | 235264 |
| 8 | 671744 |
| 9 | 1809568 |
| 10 | 4640256 |
| 11 | 11404416 |
| 12 | 27009024 |
| 13 | 61905088 |
| 14 | 137803776 |
| 15 | 298806528 |
| 16 | 632684544 |
| 17 | 1310891584 |
| 18 | 2662655232 |
| 19 | 5310231424 |
| 20 | 10412576768 |
| 21 | 20098970624 |
| 22 | 38231811072 |
| 23 | 71734039808 |
| 24 | 132875747328 |
| 25 | 243175399136 |