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 | 1 |
| 2 | 1441 |
| 3 | 11521 |
| 4 | 44641 |
| 5 | 122401 |
| 6 | 273601 |
| 7 | 534241 |
| 8 | 947521 |
| 9 | 1563841 |
| 10 | 2440801 |
| 11 | 3643201 |
| 12 | 5243041 |
| 13 | 7319521 |
| 14 | 9959041 |
| 15 | 13255201 |
| 16 | 17308801 |
| 17 | 22227841 |
| 18 | 28127521 |
| 19 | 35130241 |
| 20 | 43365601 |
| 21 | 52970401 |
| 22 | 64088641 |
| 23 | 76871521 |
| 24 | 91477441 |
| 25 | 108072001 |
| 26 | 126828001 |
| 27 | 147925441 |
| 28 | 171551521 |
| 29 | 197900641 |