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 | 1418575498573 |
| 3 | 2118274828903 |
| 4 | 4396774576273 |
| 5 | 6368171154193 |
| 6 | 6953798916913 |
| 7 | 7908189600581 |
| 8 | 10527733922591 |
| 9 | 12640876669691 |
| 10 | 27899359258003 |
| 11 | 28138953913303 |
| 12 | 34460918582323 |
| 13 | 38545620633251 |
| 14 | 40362095929003 |
| 15 | 42023308245613 |
| 16 | 43564522846961 |
| 17 | 44058461657443 |
| 18 | 60268613366231 |
| 19 | 60596839933361 |
| 20 | 61062361183903 |
| 21 | 71431649320301 |