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 | 6 |
| 3 | 28 |
| 4 | 66 |
| 5 | 406 |
| 6 | 666 |
| 7 | 820 |
| 8 | 2080 |
| 9 | 2628 |
| 10 | 8646 |
| 11 | 28680 |
| 12 | 42486 |
| 13 | 48828 |
| 14 | 64620 |
| 15 | 66066 |
| 16 | 80200 |
| 17 | 84666 |
| 18 | 200028 |
| 19 | 204480 |
| 20 | 228826 |
| 21 | 264628 |
| 22 | 288420 |
| 23 | 426426 |
| 24 | 446040 |
| 25 | 468028 |
| 26 | 484620 |
| 27 | 600060 |
| 28 | 626640 |
| 29 | 644680 |
| 30 | 686206 |
| 31 | 828828 |
| 32 | 886446 |
| 33 | 2222886 |
| 34 | 2248260 |
| 35 | 2862028 |
| 36 | 2888406 |