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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 5 |
| 7 | 6 |
| 8 | 7 |
| 9 | 8 |
| 10 | 9 |
| 11 | 81 |
| 12 | 128 |
| 13 | 256 |
| 14 | 512 |
| 15 | 729 |
| 16 | 2401 |
| 17 | 6561 |
| 18 | 8192 |
| 19 | 16384 |
| 20 | 32768 |
| 21 | 59049 |
| 22 | 78125 |
| 23 | 524288 |
| 24 | 531441 |
| 25 | 823543 |
| 26 | 1048576 |
| 27 | 2097152 |
| 28 | 4782969 |
| 29 | 33554432 |
| 30 | 43046721 |
| 31 | 67108864 |
| 32 | 134217728 |
| 33 | 282475249 |
| 34 | 387420489 |
| 35 | 1220703125 |
| 36 | 2147483648 |
| 37 | 3486784401 |
| 38 | 4294967296 |