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 | 256 |
| 2 | 65536 |
| 3 | 4816168 |
| 4 | 151310069 |
| 5 | 2844578252 |
| 6 | 37217420249 |
| 7 | 370255807510 |
| 8 | 2967702264487 |
| 9 | 19953618004020 |
| 10 | 115901407902175 |
| 11 | 594677748128499 |
| 12 | 2742258352954012 |
| 13 | 11522283571283326 |
| 14 | 44607717280309708 |
| 15 | 160585424830894289 |