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 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 7 |
| 6 | 21 |
| 7 | 129 |
| 8 | 427 |
| 9 | 693 |
| 10 | 819 |
| 11 | 3999 |
| 12 | 4257 |
| 13 | 4593 |
| 14 | 28539 |
| 15 | 66433 |
| 16 | 85093 |
| 17 | 148617 |
| 18 | 151497 |
| 19 | 153513 |
| 20 | 180213 |
| 21 | 425971 |
| 22 | 1040319 |
| 23 | 1093281 |
| 24 | 1508381 |
| 25 | 1632995 |
| 26 | 1974031 |
| 27 | 1986127 |
| 28 | 30522135 |
| 29 | 30643095 |
| 30 | 208080483 |
| 31 | 1894216583 |
| 32 | 6662648163 |
| 33 | 8632935681 |