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 | 42 |
| 2 | 1764 |
| 3 | 252 |
| 4 | 420 |
| 5 | 672 |
| 6 | 1092 |
| 7 | 1764 |
| 8 | 2856 |
| 9 | 4620 |
| 10 | 7476 |
| 11 | 12096 |
| 12 | 19572 |
| 13 | 31668 |
| 14 | 51240 |
| 15 | 82908 |
| 16 | 134148 |
| 17 | 217056 |
| 18 | 351204 |
| 19 | 568260 |
| 20 | 919464 |
| 21 | 1487724 |
| 22 | 2407188 |
| 23 | 3894912 |
| 24 | 6302100 |
| 25 | 10197012 |
| 26 | 16499112 |
| 27 | 26696124 |
| 28 | 43195236 |
| 29 | 69891360 |
| 30 | 113086596 |