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 | 5 |
| 2 | 54 |
| 3 | 364 |
| 4 | 1386 |
| 5 | 4018 |
| 6 | 9665 |
| 7 | 20386 |
| 8 | 39007 |
| 9 | 69242 |
| 10 | 115813 |
| 11 | 184570 |
| 12 | 282611 |
| 13 | 418402 |
| 14 | 601897 |
| 15 | 844658 |
| 16 | 1159975 |
| 17 | 1562986 |
| 18 | 2070797 |
| 19 | 2702602 |
| 20 | 3479803 |
| 21 | 4426130 |
| 22 | 5567761 |
| 23 | 6933442 |
| 24 | 8554607 |
| 25 | 10465498 |
| 26 | 12703285 |
| 27 | 15308186 |
| 28 | 18323587 |
| 29 | 21796162 |
| 30 | 25775993 |