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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 1 |
| 4 | 5 |
| 5 | 36 |
| 6 | 1 |
| 7 | 13 |
| 8 | 281 |
| 9 | 6728 |
| 10 | 1 |
| 11 | 34 |
| 12 | 2245 |
| 13 | 167089 |
| 14 | 12988816 |
| 15 | 1 |
| 16 | 89 |
| 17 | 18061 |
| 18 | 4213133 |
| 19 | 1031151241 |
| 20 | 258584046368 |
| 21 | 1 |
| 22 | 233 |
| 23 | 145601 |
| 24 | 106912793 |
| 25 | 82741005829 |
| 26 | 65743732590821 |
| 27 | 53060477521960000 |
| 28 | 1 |
| 29 | 610 |
| 30 | 1174500 |
| 31 | 2720246633 |
| 32 | 6675498237130 |
| 33 | 16848161392724969 |
| 34 | 43242613716069407953 |
| 35 | 112202208776036178000000 |