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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 6 |
| 7 | 9 |
| 8 | 13 |
| 9 | 20 |
| 10 | 30 |
| 11 | 45 |
| 12 | 67 |
| 13 | 101 |
| 14 | 151 |
| 15 | 227 |
| 16 | 340 |
| 17 | 510 |
| 18 | 765 |
| 19 | 1148 |
| 20 | 1722 |
| 21 | 2583 |
| 22 | 3874 |
| 23 | 5811 |
| 24 | 8717 |
| 25 | 13075 |
| 26 | 19613 |
| 27 | 29419 |
| 28 | 44129 |
| 29 | 66193 |
| 30 | 99290 |
| 31 | 148935 |
| 32 | 223402 |
| 33 | 335103 |
| 34 | 502655 |
| 35 | 753982 |
| 36 | 1130973 |
| 37 | 1696460 |
| 38 | 2544690 |
| 39 | 3817035 |
| 40 | 5725552 |