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 | 5 |
| 3 | 17 |
| 4 | 37 |
| 5 | 119 |
| 6 | 631 |
| 7 | 661 |
| 8 | 4807 |
| 9 | 995 |
| 10 | 2053 |
| 11 | 703 |
| 12 | 3599 |
| 13 | 3679 |
| 14 | 41309 |
| 15 | 42079 |
| 16 | 214091 |
| 17 | 2829383 |
| 18 | 25864847 |
| 19 | 26250947 |
| 20 | 26611307 |
| 21 | 53898289 |
| 22 | 54553489 |
| 23 | 938220113 |
| 24 | 135531719 |
| 25 | 136990319 |
| 26 | 2629070861 |
| 27 | 2654652461 |
| 28 | 2679594521 |
| 29 | 18923442047 |
| 30 | 19082164247 |
| 31 | 19237359287 |