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 | 3 |
| 2 | 23 |
| 3 | 868 |
| 4 | 1242123 |
| 5 | 2776290405248 |
| 6 | 11161696107523243223922840 |
| 7 | 261638153821481209775970282548980739821715625184617 |
| 8 | 189055393361766552088064316219614698328133697744770641431804048878604165927723712902309210241320415402 |