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) |
|---|---|
| 3 | 1175 |
| 4 | 36935 |
| 5 | 460035 |
| 6 | 3411835 |
| 7 | 18037810 |
| 8 | 75042450 |
| 9 | 261050370 |
| 10 | 790412370 |
| 11 | 2142018945 |
| 12 | 5301812945 |
| 13 | 12168481325 |
| 14 | 26200706805 |
| 15 | 53409827380 |
| 16 | 103832238580 |
| 17 | 193651833780 |
| 18 | 348184665300 |
| 19 | 605986277115 |
| 20 | 1024397262315 |
| 21 | 1686904988615 |
| 22 | 2712769566815 |
| 23 | 4269440463750 |