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 | 3 |
| 2 | 23 |
| 3 | 90 |
| 4 | 250 |
| 5 | 565 |
| 6 | 1113 |
| 7 | 1988 |
| 8 | 3300 |
| 9 | 5175 |
| 10 | 7755 |
| 11 | 11198 |
| 12 | 15678 |
| 13 | 21385 |
| 14 | 28525 |
| 15 | 37320 |
| 16 | 48008 |
| 17 | 60843 |
| 18 | 76095 |
| 19 | 94050 |
| 20 | 115010 |
| 21 | 139293 |
| 22 | 167233 |
| 23 | 199180 |
| 24 | 235500 |
| 25 | 276575 |
| 26 | 322803 |
| 27 | 374598 |
| 28 | 432390 |
| 29 | 496625 |
| 30 | 567765 |