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 | 258 |
| 2 | 276 |
| 3 | 5118 |
| 4 | 19896 |
| 5 | 50478 |
| 6 | 13039980 |
| 7 | 13297678 |
| 8 | 37166532 |
| 9 | 96266778 |
| 10 | 104100834 |
| 11 | 185320518 |
| 12 | 383918304 |
| 13 | 397075158 |
| 14 | 467692578 |
| 15 | 683981178 |
| 16 | 816166200 |
| 17 | 852339780 |
| 18 | 874276354 |
| 19 | 919926054 |
| 20 | 931402662 |
| 21 | 1016171040 |
| 22 | 1021731906 |
| 23 | 1026857286 |
| 24 | 1200889680 |
| 25 | 1501212942 |
| 26 | 1533729354 |
| 27 | 1686059670 |