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 | 2 |
| 2 | 10 |
| 3 | 93 |
| 4 | 2539 |
| 5 | 209118 |
| 6 | 54485279 |
| 7 | 42978519280 |
| 8 | 103861521149940 |
| 9 | 768825093368064218 |
| 10 | 17400837260687664224580 |
| 11 | 1205024418040758639132121433 |
| 12 | 255358434130512785761464119154485 |