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 | 4 |
| 2 | 16 |
| 3 | 28 |
| 4 | 52 |
| 5 | 72 |
| 6 | 108 |
| 7 | 136 |
| 8 | 184 |
| 9 | 220 |
| 10 | 280 |
| 11 | 324 |
| 12 | 396 |
| 13 | 448 |
| 14 | 532 |
| 15 | 592 |
| 16 | 688 |
| 17 | 756 |
| 18 | 864 |
| 19 | 940 |
| 20 | 1060 |
| 21 | 1144 |
| 22 | 1276 |
| 23 | 1368 |
| 24 | 1512 |
| 25 | 1612 |
| 26 | 1768 |
| 27 | 1876 |
| 28 | 2044 |
| 29 | 2160 |
| 30 | 2340 |
| 31 | 2464 |
| 32 | 2656 |
| 33 | 2788 |
| 34 | 2992 |
| 35 | 3132 |
| 36 | 3348 |
| 37 | 3496 |
| 38 | 3724 |
| 39 | 3880 |
| 40 | 4120 |
| 41 | 4284 |
| 42 | 4536 |