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 | 15 |
| 2 | 458 |
| 3 | 3740 |
| 4 | 17771 |
| 5 | 60778 |
| 6 | 168453 |
| 7 | 401634 |
| 8 | 857433 |
| 9 | 1679810 |
| 10 | 3074315 |
| 11 | 5321674 |
| 12 | 8796771 |
| 13 | 13984178 |
| 14 | 21501971 |
| 15 | 32119660 |
| 16 | 46785813 |
| 17 | 66648788 |
| 18 | 93089119 |
| 19 | 127741326 |
| 20 | 172532039 |
| 21 | 229703658 |
| 22 | 301856427 |
| 23 | 391974770 |
| 24 | 503474661 |
| 25 | 640230118 |
| 26 | 806627193 |