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) |
|---|---|
| 3 | 36 |
| 4 | 81 |
| 5 | 590 |
| 6 | 5286126 |
| 7 | 15880 |
| 8 | 1932821 |
| 9 | 37990539325 |
| 10 | 6280 |
| 11 | 234222782808 |
| 12 | 3350529 |
| 13 | 931738 |
| 14 | 455621651099 |
| 15 | 3312 |
| 16 | 2680 |
| 17 | 373569353 |
| 18 | 1128231876 |
| 19 | 47531850550 |
| 20 | 601657 |
| 21 | 4609261 |
| 22 | 115668 |
| 23 | 164642040082433296 |
| 24 | 336577944 |
| 25 | 40161257476 |
| 26 | 5031720 |
| 27 | 31424211 |
| 28 | 25785 |
| 29 | 12670237746 |