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 | 16 |
| 3 | 38 |
| 4 | 78 |
| 5 | 136 |
| 6 | 220 |
| 7 | 330 |
| 8 | 474 |
| 9 | 652 |
| 10 | 872 |
| 11 | 1134 |
| 12 | 1446 |
| 13 | 1808 |
| 14 | 2228 |
| 15 | 2706 |
| 16 | 3250 |
| 17 | 3860 |
| 18 | 4544 |
| 19 | 5302 |
| 20 | 6142 |
| 21 | 7064 |
| 22 | 8076 |
| 23 | 9178 |
| 24 | 10378 |
| 25 | 11676 |
| 26 | 13080 |
| 27 | 14590 |
| 28 | 16214 |
| 29 | 17952 |
| 30 | 19812 |
| 31 | 21794 |
| 32 | 23906 |
| 33 | 26148 |
| 34 | 28528 |
| 35 | 31046 |
| 36 | 33710 |
| 37 | 36520 |
| 38 | 39484 |
| 39 | 42602 |
| 40 | 45882 |