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 | 20 |
| 2 | 70 |
| 3 | 88 |
| 4 | 272 |
| 5 | 550 |
| 6 | 572 |
| 7 | 945 |
| 8 | 1184 |
| 9 | 1430 |
| 10 | 1575 |
| 11 | 2205 |
| 12 | 3465 |
| 13 | 4288 |
| 14 | 5775 |
| 15 | 7425 |
| 16 | 8085 |
| 17 | 12705 |
| 18 | 15015 |
| 19 | 16768 |
| 20 | 24272 |
| 21 | 28215 |
| 22 | 47025 |
| 23 | 49875 |
| 24 | 65792 |
| 25 | 69825 |
| 26 | 78975 |
| 27 | 81081 |
| 28 | 103455 |
| 29 | 131625 |
| 30 | 152224 |
| 31 | 153153 |
| 32 | 182325 |
| 33 | 189189 |
| 34 | 266752 |
| 35 | 297297 |
| 36 | 342225 |
| 37 | 351351 |
| 38 | 363375 |
| 39 | 387345 |
| 40 | 392445 |
| 41 | 474045 |