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 | 2929 |
| 4 | 137243 |
| 5 | 4769 |
| 6 | 4021227877 |
| 7 | 387497 |
| 8 | 7342733 |
| 9 | 2592842671511 |
| 10 | 22963573117 |
| 11 | 18659 |
| 12 | 120593747 |
| 13 | 13757837 |
| 14 | 17651 |
| 15 | 17149 |
| 16 | 16584420001 |
| 17 | 613024059983 |
| 18 | 407 |
| 19 | 39959 |
| 20 | 559 |
| 21 | 581831 |
| 22 | 305197 |
| 23 | 235 |
| 24 | 459207143 |
| 25 | 855782591 |
| 26 | 106709 |
| 27 | 17678421233 |
| 28 | 240055 |
| 29 | 11227 |