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 | 266 |
| 2 | 896 |
| 3 | 2801 |
| 4 | 8231 |
| 5 | 23486 |
| 6 | 66366 |
| 7 | 187671 |
| 8 | 533801 |
| 9 | 1530356 |
| 10 | 4371836 |
| 11 | 12472691 |
| 12 | 35574971 |
| 13 | 101483076 |
| 14 | 289556006 |
| 15 | 826266561 |
| 16 | 2357781941 |
| 17 | 6727551746 |
| 18 | 19195784876 |
| 19 | 54771887681 |
| 20 | 156283330211 |
| 21 | 445932182766 |
| 22 | 1272403116946 |