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 | 1 |
| 2 | 6 |
| 3 | 27 |
| 4 | 98 |
| 5 | 315 |
| 6 | 912 |
| 7 | 2456 |
| 8 | 6210 |
| 9 | 14937 |
| 10 | 34390 |
| 11 | 76317 |
| 12 | 163896 |
| 13 | 342062 |
| 14 | 695736 |
| 15 | 1382880 |
| 16 | 2691586 |
| 17 | 5139906 |
| 18 | 9644622 |
| 19 | 17808040 |
| 20 | 32393370 |
| 21 | 58113312 |
| 22 | 102914152 |
| 23 | 180062622 |
| 24 | 311488920 |
| 25 | 533124225 |
| 26 | 903324372 |
| 27 | 1516110165 |
| 28 | 2521780688 |
| 29 | 4158863310 |
| 30 | 6803237280 |
| 31 | 11043320922 |
| 32 | 17794350786 |