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 | 1 |
| 1 | 4 |
| 2 | 12 |
| 3 | 31 |
| 4 | 71 |
| 5 | 147 |
| 6 | 280 |
| 7 | 498 |
| 8 | 837 |
| 9 | 1342 |
| 10 | 2068 |
| 11 | 3081 |
| 12 | 4459 |
| 13 | 6293 |
| 14 | 8688 |
| 15 | 11764 |
| 16 | 15657 |
| 17 | 20520 |
| 18 | 26524 |
| 19 | 33859 |
| 20 | 42735 |
| 21 | 53383 |
| 22 | 66056 |
| 23 | 81030 |
| 24 | 98605 |
| 25 | 119106 |
| 26 | 142884 |
| 27 | 170317 |
| 28 | 201811 |
| 29 | 237801 |
| 30 | 278752 |
| 31 | 325160 |
| 32 | 377553 |
| 33 | 436492 |
| 34 | 502572 |
| 35 | 576423 |
| 36 | 658711 |
| 37 | 750139 |
| 38 | 851448 |