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 | 2 |
| 2 | 130 |
| 3 | 2190 |
| 4 | 16388 |
| 5 | 78130 |
| 6 | 279942 |
| 7 | 823550 |
| 8 | 2097160 |
| 9 | 4782978 |
| 10 | 10000010 |
| 11 | 19487182 |
| 12 | 35831820 |
| 13 | 62748530 |
| 14 | 105413518 |
| 15 | 170859390 |
| 16 | 268435472 |
| 17 | 410338690 |
| 18 | 612220050 |
| 19 | 893871758 |
| 20 | 1280000020 |
| 21 | 1801088562 |
| 22 | 2494357910 |
| 23 | 3404825470 |
| 24 | 4586471448 |