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 | 20 |
| 3 | 110 |
| 4 | 308 |
| 5 | 1254 |
| 6 | 2106 |
| 7 | 4760 |
| 8 | 6650 |
| 9 | 11822 |
| 10 | 23954 |
| 11 | 29202 |
| 12 | 49950 |
| 13 | 68060 |
| 14 | 78518 |
| 15 | 102460 |
| 16 | 147446 |
| 17 | 203432 |
| 18 | 225090 |
| 19 | 298418 |
| 20 | 354858 |
| 21 | 386316 |
| 22 | 489484 |
| 23 | 568052 |
| 24 | 700964 |
| 25 | 907920 |
| 26 | 1025150 |
| 27 | 1086856 |
| 28 | 1218944 |
| 29 | 1289034 |
| 30 | 1436456 |
| 31 | 2039620 |
| 32 | 2238790 |
| 33 | 2561900 |
| 34 | 2675472 |
| 35 | 3296774 |
| 36 | 3430418 |