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 | 69 |
| 2 | 2346 |
| 3 | 52394 |
| 4 | 864501 |
| 5 | 11238513 |
| 6 | 119877472 |
| 7 | 1078897248 |
| 8 | 8361453672 |
| 9 | 56672074888 |
| 10 | 340032449328 |
| 11 | 1823810410032 |
| 12 | 8815083648488 |
| 13 | 38650751381832 |
| 14 | 154603005527328 |
| 15 | 566877686933536 |
| 16 | 1913212193400684 |
| 17 | 5964720367660956 |
| 18 | 17231414395464984 |