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 | 26 |
| 2 | 169 |
| 3 | 1230 |
| 4 | 9593 |
| 5 | 78499 |
| 6 | 1270608 |
| 7 | 5761456 |
| 8 | 50847535 |
| 9 | 1300005927 |
| 10 | 4118054814 |
| 11 | 73301896140 |
| 12 | 1320811971703 |
| 13 | 29844570422670 |
| 14 | 169969662554552 |
| 15 | 547863431950009 |
| 16 | 2623557157654234 |
| 17 | 24739954287740861 |
| 18 | 1347790196060095448 |
| 19 | 10720710117789005898 |
| 20 | 161902001837504830334 |