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 | 19 |
| 2 | 213 |
| 3 | 1101 |
| 4 | 3785 |
| 5 | 10205 |
| 6 | 23425 |
| 7 | 47713 |
| 8 | 89007 |
| 9 | 154971 |
| 10 | 255311 |
| 11 | 401933 |
| 12 | 609517 |
| 13 | 895003 |
| 14 | 1278825 |
| 15 | 1784361 |
| 16 | 2438483 |
| 17 | 3271643 |
| 18 | 4318837 |
| 19 | 5618137 |
| 20 | 7213161 |
| 21 | 9151545 |
| 22 | 11485961 |
| 23 | 14273951 |
| 24 | 17579509 |
| 25 | 21470299 |
| 26 | 26021835 |
| 27 | 31314591 |
| 28 | 37435583 |
| 29 | 44478011 |