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 | 0 |
| 1 | 1 |
| 2 | 215 |
| 3 | 38691 |
| 4 | 441262 |
| 5 | 5213591 |
| 6 | 69677001 |
| 7 | 70635304 |
| 8 | 827712431 |
| 9 | 984024783 |
| 10 | 1 |
| 11 | 1967497532 |
| 12 | 2530879515 |
| 13 | 37399440601 |
| 14 | 48764016602 |
| 15 | 57395334483 |
| 16 | 63767491786 |
| 17 | 794678785811 |
| 18 | 863092953891 |
| 19 | 977796786223 |
| 20 | 215 |
| 21 | 185640082497 |
| 22 | 2977129627021 |
| 23 | 3641662511081 |
| 24 | 4220457081462 |