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 | 3 |
| 2 | 10 |
| 3 | 28 |
| 4 | 66 |
| 5 | 130 |
| 6 | 204 |
| 7 | 304 |
| 8 | 414 |
| 9 | 638 |
| 10 | 868 |
| 11 | 1110 |
| 12 | 1476 |
| 13 | 1720 |
| 14 | 1974 |
| 15 | 2438 |
| 16 | 3068 |
| 17 | 3538 |
| 18 | 4020 |
| 19 | 4686 |
| 20 | 5110 |
| 21 | 5688 |
| 22 | 6474 |
| 23 | 7298 |
| 24 | 8536 |
| 25 | 9696 |
| 26 | 10300 |
| 27 | 10914 |
| 28 | 11554 |
| 29 | 12204 |
| 30 | 14224 |
| 31 | 16506 |
| 32 | 17810 |
| 33 | 18904 |
| 34 | 20562 |
| 35 | 22348 |
| 36 | 23550 |
| 37 | 25428 |
| 38 | 27054 |
| 39 | 28718 |
| 40 | 30788 |
| 41 | 32218 |