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) |
|---|---|
| 1 | 0 |
| 2 | 94 |
| 3 | 97974 |
| 4 | 10700090 |
| 5 | 390081800 |
| 6 | 7280687610 |
| 7 | 86121007714 |
| 8 | 730895668104 |
| 9 | 4816861200630 |
| 10 | 26010740238450 |
| 11 | 119563513291420 |
| 12 | 481192778757834 |
| 13 | 1732132086737234 |
| 14 | 5669991002636870 |
| 15 | 17101193825828700 |
| 16 | 48029634770843680 |