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) |
|---|---|
| 2 | 1 |
| 3 | 38 |
| 4 | 469 |
| 5 | 3008 |
| 6 | 12843 |
| 7 | 42602 |
| 8 | 119042 |
| 9 | 293578 |
| 10 | 658021 |
| 11 | 1367170 |
| 12 | 2670203 |
| 13 | 4953136 |
| 14 | 8794967 |
| 15 | 15040494 |
| 16 | 24893192 |
| 17 | 40031954 |
| 18 | 62755945 |
| 19 | 96162286 |
| 20 | 144361777 |
| 21 | 212738384 |
| 22 | 308258755 |
| 23 | 439838594 |
| 24 | 618773310 |
| 25 | 859240970 |
| 26 | 1178886221 |
| 27 | 1599494506 |
| 28 | 2147766583 |
| 29 | 2856204064 |