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 | -3 |
| 4 | -4 |
| 5 | -6 |
| 6 | -5 |
| 7 | -4 |
| 8 | 2 |
| 9 | 11 |
| 10 | 26 |
| 11 | 58 |
| 12 | 107 |
| 13 | 192 |
| 14 | 334 |
| 15 | 563 |
| 16 | 934 |
| 17 | 1538 |
| 18 | 2523 |
| 19 | 4114 |
| 20 | 6694 |
| 21 | 10873 |
| 22 | 17632 |
| 23 | 28574 |
| 24 | 46279 |
| 25 | 74928 |
| 26 | 121292 |
| 27 | 196315 |
| 28 | 317704 |
| 29 | 514120 |
| 30 | 831927 |
| 31 | 1346142 |
| 32 | 2178178 |
| 33 | 3524441 |
| 34 | 5702748 |
| 35 | 9227316 |
| 36 | 14930201 |
| 37 | 24157660 |
| 38 | 39088006 |
| 39 | 63245819 |