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 | 6 |
| 2 | 210 |
| 3 | 1785 |
| 4 | 60639 |
| 5 | 915530 |
| 6 | 184030 |
| 7 | 14066106 |
| 8 | 80753867670 |
| 9 | 10973017315470 |
| 10 | 372759573255306 |
| 11 | 351745902037915 |
| 12 | 11949006236698685 |
| 13 | 86466986871277074 |
| 14 | 122261486084598 |
| 15 | 43869141307765893 |
| 16 | 35803482505852454889891 |
| 17 | 2162247909473892250092390 |
| 18 | 73452778286546376583337010 |