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 | 128 |
| 2 | 2570 |
| 3 | 94891 |
| 4 | 1955750 |
| 5 | 59210634 |
| 6 | 1487819051 |
| 7 | 41030621948 |
| 8 | 1066508741933 |
| 9 | 28748828127508 |
| 10 | 759564088991329 |
| 11 | 20288126990340123 |
| 12 | 538493726660721622 |
| 13 | 14345913847238205189 |
| 14 | 381379710626740656598 |
| 15 | 10150876741291095683850 |