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 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 9 |
| 6 | 17 |
| 7 | 26 |
| 8 | 49 |
| 9 | 72 |
| 10 | 134 |
| 11 | 201 |
| 12 | 366 |
| 13 | 544 |
| 14 | 984 |
| 15 | 1436 |
| 16 | 2614 |
| 17 | 3838 |
| 18 | 6770 |
| 19 | 10019 |
| 20 | 17767 |
| 21 | 25808 |
| 22 | 45597 |
| 23 | 66671 |
| 24 | 116461 |
| 25 | 169747 |
| 26 | 295922 |
| 27 | 428090 |
| 28 | 750343 |
| 29 | 1086245 |
| 30 | 1863608 |
| 31 | 2721509 |
| 32 | 4705456 |
| 33 | 6759500 |
| 34 | 11660244 |
| 35 | 16877655 |
| 36 | 28879255 |
| 37 | 41778027 |
| 38 | 71384579 |
| 39 | 102527811 |
| 40 | 176151979 |