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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 8 |
| 5 | 21 |
| 6 | 29 |
| 7 | 79 |
| 8 | 661 |
| 9 | 740 |
| 10 | 19161 |
| 11 | 19901 |
| 12 | 118666 |
| 13 | 138567 |
| 14 | 3167140 |
| 15 | 3305707 |
| 16 | 29612796 |
| 17 | 32918503 |
| 18 | 62531299 |
| 19 | 595700194 |
| 20 | 658231493 |
| 21 | 1253931687 |
| 22 | 5673958241 |
| 23 | 6927889928 |
| 24 | 19529738097 |
| 25 | 26457628025 |
| 26 | 72444994147 |
| 27 | 98902622172 |
| 28 | 270250238491 |
| 29 | 639403099154 |