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 | 11 |
| 2 | 17 |
| 3 | 59 |
| 4 | 353 |
| 5 | 2411 |
| 6 | 117659 |
| 7 | 823553 |
| 8 | 1977326753 |
| 9 | 9387480337647754305659 |
| 10 | 3219905755813179726837617 |
| 11 | 44567640326363195900190045974568017 |
| 12 | 616873509628062366290756156815389726793178417 |
| 13 | 30226801971775055948247051683954096612865741953 |