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 | 5 |
| 2 | 11 |
| 3 | 88 |
| 4 | 358 |
| 5 | 2002 |
| 6 | 9528 |
| 7 | 49101 |
| 8 | 243118 |
| 9 | 1228036 |
| 10 | 6141239 |
| 11 | 30865981 |
| 12 | 154742849 |
| 13 | 776765183 |
| 14 | 3896668986 |
| 15 | 19553995645 |
| 16 | 98108834263 |
| 17 | 492283814664 |
| 18 | 2470048647138 |
| 19 | 12393793010466 |
| 20 | 62186850336292 |
| 21 | 312029099308093 |
| 22 | 1565635002686314 |