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 | 4 |
| 2 | 20 |
| 3 | 52 |
| 4 | 112 |
| 5 | 196 |
| 6 | 328 |
| 7 | 492 |
| 8 | 716 |
| 9 | 992 |
| 10 | 1340 |
| 11 | 1736 |
| 12 | 2244 |
| 13 | 2808 |
| 14 | 3468 |
| 15 | 4224 |
| 16 | 5104 |
| 17 | 6056 |
| 18 | 7164 |
| 19 | 8352 |
| 20 | 9708 |
| 21 | 11192 |
| 22 | 12820 |
| 23 | 14544 |
| 24 | 16508 |
| 25 | 18596 |
| 26 | 20852 |
| 27 | 23268 |
| 28 | 25908 |
| 29 | 28668 |
| 30 | 31716 |
| 31 | 34892 |
| 32 | 38320 |
| 33 | 41940 |
| 34 | 45776 |
| 35 | 49804 |
| 36 | 54196 |
| 37 | 58740 |
| 38 | 63524 |
| 39 | 68532 |
| 40 | 73900 |