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) |
|---|---|
| 0 | 2 |
| 1 | 2662 |
| 2 | 59582 |
| 3 | 453962 |
| 4 | 2060602 |
| 5 | 6885902 |
| 6 | 18787862 |
| 7 | 44376082 |
| 8 | 94091762 |
| 9 | 183467702 |
| 10 | 334568302 |
| 11 | 577609562 |
| 12 | 952759082 |
| 13 | 1512116062 |
| 14 | 2321871302 |
| 15 | 3464647202 |
| 16 | 5042017762 |
| 17 | 7177208582 |
| 18 | 10017976862 |
| 19 | 13739671402 |
| 20 | 18548472602 |