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 | 1 |
| 2 | 3 |
| 3 | 11 |
| 4 | 61 |
| 5 | 11 |
| 6 | 82 |
| 7 | 171 |
| 8 | 1951 |
| 9 | 26133 |
| 10 | 13424 |
| 11 | 41273 |
| 12 | 716656 |
| 13 | 13871719 |
| 14 | 4700888 |
| 15 | 9548741 |
| 16 | 222854273 |
| 17 | 112857219 |
| 18 | 3310041496 |
| 19 | 20075905417 |
| 20 | 628822761157 |
| 21 | 19239404599 |
| 22 | 9709078632 |
| 23 | 1959180271 |
| 24 | 73097429088 |
| 25 | 147378388979 |
| 26 | 445594718515 |
| 27 | 18404305970657 |
| 28 | 3089336006908 |
| 29 | 133763418792581 |