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 | 4 |
| 2 | 50 |
| 3 | 208 |
| 4 | 582 |
| 5 | 1308 |
| 6 | 2556 |
| 7 | 4528 |
| 8 | 7460 |
| 9 | 11620 |
| 10 | 17310 |
| 11 | 24864 |
| 12 | 34650 |
| 13 | 47068 |
| 14 | 62552 |
| 15 | 81568 |
| 16 | 104616 |
| 17 | 132228 |
| 18 | 164970 |
| 19 | 203440 |
| 20 | 248270 |
| 21 | 300124 |
| 22 | 359700 |
| 23 | 427728 |
| 24 | 504972 |
| 25 | 592228 |
| 26 | 690326 |
| 27 | 800128 |
| 28 | 922530 |
| 29 | 1058460 |
| 30 | 1208880 |
| 31 | 1374784 |
| 32 | 1557200 |
| 33 | 1757188 |