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 | 13 |
| 2 | 192 |
| 3 | 1320 |
| 4 | 5470 |
| 5 | 17499 |
| 6 | 45892 |
| 7 | 105856 |
| 8 | 219564 |
| 9 | 421825 |
| 10 | 758560 |
| 11 | 1296408 |
| 12 | 2117882 |
| 13 | 3336655 |
| 14 | 5087460 |
| 15 | 7549184 |
| 16 | 10927192 |
| 17 | 15486741 |
| 18 | 21525024 |
| 19 | 29417800 |
| 20 | 39578070 |
| 21 | 52519203 |
| 22 | 68796772 |
| 23 | 89091840 |
| 24 | 114132100 |
| 25 | 144799369 |
| 26 | 182025792 |