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 | 1 |
| 2 | 3 |
| 3 | 38 |
| 4 | 947 |
| 5 | 37394 |
| 6 | 2120190 |
| 7 | 162980012 |
| 8 | 16330173251 |
| 9 | 2070201641498 |
| 10 | 324240251016266 |
| 11 | 61525045423103316 |
| 12 | 13913915097436287598 |
| 13 | 3698477457114061621492 |
| 14 | 1141824214469896983332508 |