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 | 62 |
| 2 | 3845 |
| 3 | 238452 |
| 4 | 14787869 |
| 5 | 917086330 |
| 6 | 56874140329 |
| 7 | 3527113786728 |
| 8 | 218737928917465 |
| 9 | 13565278706669558 |
| 10 | 841266017742430061 |
| 11 | 52172058378737333340 |
| 12 | 3235508885499457097141 |
| 13 | 200653722959345077356082 |
| 14 | 12443766332364894253174225 |
| 15 | 771714166329582788774158032 |