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 | 81 |
| 2 | 6561 |
| 3 | 165783 |
| 4 | 4108471 |
| 5 | 115505069 |
| 6 | 3254925997 |
| 7 | 90497940567 |
| 8 | 2513905109615 |
| 9 | 69918135147567 |
| 10 | 1945015733467487 |
| 11 | 54104019551291657 |
| 12 | 1504951979516380911 |
| 13 | 41861310528949142861 |
| 14 | 1164403984942205341081 |
| 15 | 32388853771860099448897 |