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 | 2 |
| 3 | 5 |
| 4 | 14 |
| 5 | 41 |
| 6 | 119 |
| 7 | 334 |
| 8 | 902 |
| 9 | 2351 |
| 10 | 5945 |
| 11 | 14660 |
| 12 | 35408 |
| 13 | 84061 |
| 14 | 196715 |
| 15 | 454778 |
| 16 | 1040522 |
| 17 | 2359451 |
| 18 | 5308589 |
| 19 | 11862208 |
| 20 | 26345684 |
| 21 | 58196201 |
| 22 | 127926527 |
| 23 | 279970070 |
| 24 | 610271534 |
| 25 | 1325400391 |
| 26 | 2868904289 |
| 27 | 6190793084 |
| 28 | 13321109912 |
| 29 | 28588376501 |
| 30 | 61203284435 |
| 31 | 130728067570 |