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 | -2 |
| 2 | 2 |
| 3 | 18 |
| 4 | 52 |
| 5 | 110 |
| 6 | 198 |
| 7 | 322 |
| 8 | 488 |
| 9 | 702 |
| 10 | 970 |
| 11 | 1298 |
| 12 | 1692 |
| 13 | 2158 |
| 14 | 2702 |
| 15 | 3330 |
| 16 | 4048 |
| 17 | 4862 |
| 18 | 5778 |
| 19 | 6802 |
| 20 | 7940 |
| 21 | 9198 |
| 22 | 10582 |
| 23 | 12098 |
| 24 | 13752 |
| 25 | 15550 |
| 26 | 17498 |
| 27 | 19602 |
| 28 | 21868 |
| 29 | 24302 |
| 30 | 26910 |
| 31 | 29698 |
| 32 | 32672 |
| 33 | 35838 |
| 34 | 39202 |
| 35 | 42770 |
| 36 | 46548 |
| 37 | 50542 |
| 38 | 54758 |
| 39 | 59202 |
| 40 | 63880 |
| 41 | 68798 |
| 42 | 73962 |