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) |
|---|---|
| 4 | 1 |
| 5 | 341 |
| 6 | 93093 |
| 7 | 24208613 |
| 8 | 6221613541 |
| 9 | 1594283908581 |
| 10 | 408235958349285 |
| 11 | 104514759495347685 |
| 12 | 26756185103024942565 |
| 13 | 6849609413493939400165 |
| 14 | 1753501675591663698472421 |
| 15 | 448896535558672700374937061 |
| 16 | 114917519925881846404167134693 |