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 | 12 |
| 3 | 34 |
| 4 | 70 |
| 5 | 124 |
| 6 | 218 |
| 7 | 264 |
| 8 | 540 |
| 9 | 604 |
| 10 | 670 |
| 11 | 754 |
| 12 | 1182 |
| 13 | 1310 |
| 14 | 1418 |
| 15 | 2606 |
| 16 | 2702 |
| 17 | 3516 |
| 18 | 4248 |
| 19 | 7358 |
| 20 | 7680 |
| 21 | 7692 |
| 22 | 9060 |
| 23 | 9962 |
| 24 | 17568 |
| 25 | 18052 |
| 26 | 23784 |
| 27 | 28218 |
| 28 | 29814 |
| 29 | 31024 |
| 30 | 34788 |
| 31 | 41438 |
| 32 | 48984 |
| 33 | 59568 |
| 34 | 68986 |
| 35 | 75944 |
| 36 | 82700 |
| 37 | 83232 |
| 38 | 91840 |
| 39 | 113108 |
| 40 | 132652 |
| 41 | 153094 |
| 42 | 167608 |