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) |
|---|---|
| 6 | 1 |
| 7 | 18 |
| 8 | 171 |
| 9 | 1158 |
| 10 | 6309 |
| 11 | 29466 |
| 12 | 122580 |
| 13 | 465738 |
| 14 | 1644516 |
| 15 | 5464892 |
| 16 | 17253369 |
| 17 | 52128540 |
| 18 | 151592391 |
| 19 | 426265836 |
| 20 | 1163373243 |
| 21 | 3091338000 |
| 22 | 8018585046 |
| 23 | 20348618814 |
| 24 | 50615278427 |
| 25 | 123608650182 |
| 26 | 296794147017 |
| 27 | 701525018576 |
| 28 | 1634144413185 |
| 29 | 3755097200094 |
| 30 | 8519488746222 |