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 | 50 |
| 2 | 2500 |
| 3 | 99223 |
| 4 | 3863372 |
| 5 | 152918517 |
| 6 | 6066668157 |
| 7 | 240345697904 |
| 8 | 9519219712534 |
| 9 | 377068749332794 |
| 10 | 14936662560715369 |
| 11 | 591673197324653702 |
| 12 | 23437360043162717039 |
| 13 | 928401612451857089159 |
| 14 | 36775894520547706164712 |