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 | 3010132125 |
| 2 | 4502334375 |
| 3 | 5065535475 |
| 4 | 6456074625 |
| 5 | 8813660625 |
| 6 | 9881746875 |
| 7 | 15395254875 |
| 8 | 15452011575 |
| 9 | 16874983125 |
| 10 | 18699305625 |
| 11 | 19814169375 |
| 12 | 19909992375 |
| 13 | 21380506875 |
| 14 | 25366375125 |
| 15 | 26643400875 |
| 16 | 26746594875 |
| 17 | 28943578125 |
| 18 | 31562182575 |
| 19 | 33074966925 |
| 20 | 34315506225 |
| 21 | 35300640375 |