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 | 148 |
| 2 | 21904 |
| 3 | 1285547 |
| 4 | 38566854 |
| 5 | 733129227 |
| 6 | 9991366555 |
| 7 | 105179942478 |
| 8 | 899048082946 |
| 9 | 6467662339564 |
| 10 | 40225236084575 |
| 11 | 220829853370074 |
| 12 | 1087845990005427 |
| 13 | 4872987051273250 |
| 14 | 20066702492608999 |
| 15 | 76656800237546730 |