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 | 2 |
| 2 | 24 |
| 3 | 154 |
| 4 | 1183 |
| 5 | 3385 |
| 6 | 40933 |
| 7 | 325852 |
| 8 | 2850174 |
| 9 | 23163298 |
| 10 | 203615628 |
| 11 | 1820471368 |
| 12 | 28106444830 |
| 13 | 251265078335 |
| 14 | 2921439731020 |
| 15 | 6822667965940 |
| 16 | 49749629143526 |
| 17 | 2133658100875638 |
| 18 | 20004097201301079 |