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) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 75 |
| 3 | 1125 |
| 4 | 16875 |
| 5 | 253125 |
| 6 | 3796875 |
| 7 | 56953125 |
| 8 | 854296875 |
| 9 | 12814453125 |
| 10 | 192216796875 |
| 11 | 2883251953125 |
| 12 | 43248779296875 |
| 13 | 648731689453125 |
| 14 | 9730975341796875 |
| 15 | 145964630126953125 |
| 16 | 2189469451904296875 |
| 17 | 32842041778564453125 |
| 18 | 492630626678466796875 |
| 19 | 7389459400177001953125 |