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 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 8 |
| 5 | 18 |
| 6 | 24 |
| 7 | 31 |
| 8 | 38 |
| 9 | 72 |
| 10 | 105 |
| 11 | 129 |
| 12 | 630 |
| 13 | 1285 |
| 14 | 1542 |
| 15 | 2048 |
| 16 | 3112 |
| 17 | 3512 |
| 18 | 7710 |
| 19 | 7760 |
| 20 | 9728 |
| 21 | 27594 |
| 22 | 48834 |
| 23 | 60787 |
| 24 | 104694 |
| 25 | 140896 |
| 26 | 282224 |
| 27 | 384800 |
| 28 | 683720 |
| 29 | 1205998 |
| 30 | 1240672 |
| 31 | 1407592 |
| 32 | 4012472 |
| 33 | 4429250 |
| 34 | 4628480 |
| 35 | 16657248 |
| 36 | 69273666 |
| 37 | 107700228 |
| 38 | 254290896 |
| 39 | 319233186 |