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) |
|---|---|
| 0 | 2 |
| 1 | 4 |
| 2 | 9 |
| 3 | 16 |
| 4 | 29 |
| 5 | 47 |
| 6 | 77 |
| 7 | 118 |
| 8 | 181 |
| 9 | 267 |
| 10 | 392 |
| 11 | 560 |
| 12 | 797 |
| 13 | 1111 |
| 14 | 1541 |
| 15 | 2106 |
| 16 | 2863 |
| 17 | 3846 |
| 18 | 5142 |
| 19 | 6808 |
| 20 | 8973 |
| 21 | 11733 |
| 22 | 15275 |
| 23 | 19753 |
| 24 | 25443 |
| 25 | 32582 |
| 26 | 41569 |
| 27 | 52770 |
| 28 | 66757 |
| 29 | 84078 |
| 30 | 105555 |
| 31 | 131995 |
| 32 | 164566 |
| 33 | 204450 |
| 34 | 253292 |
| 35 | 312799 |
| 36 | 385285 |
| 37 | 473183 |
| 38 | 579722 |
| 39 | 708353 |
| 40 | 863553 |