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) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 32 |
| 5 | 46 |
| 6 | 392 |
| 7 | 12230 |
| 8 | 155942 |
| 9 | 659488 |
| 10 | 1025582 |
| 11 | 1047128 |
| 12 | 3437088 |
| 13 | 1449322158 |
| 14 | 1452777560 |
| 15 | 1691887144 |
| 16 | 4558298126 |
| 17 | 4840156480 |
| 18 | 39554086678 |
| 19 | 353617531486 |
| 20 | 608231808384 |
| 21 | 619986226720 |
| 22 | 969355365422 |