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 | 1 |
| 1 | 28 |
| 2 | 252 |
| 3 | 757 |
| 4 | 2044 |
| 5 | 3528 |
| 6 | 6813 |
| 7 | 9632 |
| 8 | 16380 |
| 9 | 20440 |
| 10 | 31752 |
| 11 | 37296 |
| 12 | 55261 |
| 13 | 61544 |
| 14 | 86688 |
| 15 | 95382 |
| 16 | 131068 |
| 17 | 137592 |
| 18 | 183960 |
| 19 | 192080 |
| 20 | 257544 |
| 21 | 260408 |
| 22 | 335664 |
| 23 | 340704 |
| 24 | 442845 |
| 25 | 441028 |
| 26 | 553896 |
| 27 | 551881 |
| 28 | 703136 |
| 29 | 682920 |
| 30 | 858438 |
| 31 | 834176 |
| 32 | 1048572 |
| 33 | 1008324 |
| 34 | 1238328 |
| 35 | 1213632 |