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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 10 |
| 7 | 20 |
| 8 | 364 |
| 9 | 728 |
| 10 | 730 |
| 11 | 1460 |
| 12 | 2920 |
| 13 | 5840 |
| 14 | 7300 |
| 15 | 7381 |
| 16 | 7462 |
| 17 | 14600 |
| 18 | 14681 |
| 19 | 14762 |
| 20 | 265720 |
| 21 | 531440 |
| 22 | 531442 |
| 23 | 532171 |
| 24 | 532900 |
| 25 | 1062884 |
| 26 | 1063613 |
| 27 | 1064342 |
| 28 | 2125768 |
| 29 | 2128684 |
| 30 | 2131600 |
| 31 | 4251536 |
| 32 | 4254452 |
| 33 | 4257368 |
| 34 | 5314420 |
| 35 | 5321710 |
| 36 | 5329000 |
| 37 | 5373550 |
| 38 | 5380840 |
| 39 | 5388130 |
| 40 | 5432680 |
| 41 | 5439970 |
| 42 | 5447260 |