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 | 5 |
| 2 | 10 |
| 3 | 136 |
| 4 | 153 |
| 5 | 306 |
| 6 | 428 |
| 7 | 623 |
| 8 | 763 |
| 9 | 4072 |
| 10 | 8580 |
| 11 | 9964 |
| 12 | 22373 |
| 13 | 25571 |
| 14 | 109408 |
| 15 | 190619 |
| 16 | 276532 |
| 17 | 314223 |
| 18 | 463097 |
| 19 | 2256531 |
| 20 | 2791875 |
| 21 | 4325972 |
| 22 | 14492546 |
| 23 | 20201957 |
| 24 | 28465976 |
| 25 | 64084574 |
| 26 | 72478694 |
| 27 | 109821726 |
| 28 | 543521049 |
| 29 | 65927493216 |
| 30 | 105027578781 |
| 31 | 128041940756 |