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) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 19 |
| 3 | 51 |
| 4 | 197 |
| 5 | 901 |
| 6 | 2038 |
| 7 | 5839 |
| 8 | 13476 |
| 9 | 18517 |
| 10 | 36993 |
| 11 | 60544 |
| 12 | 60557 |
| 13 | 60555 |
| 14 | 60553 |
| 15 | 705691 |
| 16 | 705758 |
| 17 | 2528254 |
| 18 | 4762881 |
| 19 | 5645512 |
| 20 | 5645535 |
| 21 | 20250250 |
| 22 | 20250249 |
| 23 | 26733097 |
| 24 | 66978018 |
| 25 | 66978001 |
| 26 | 66978016 |
| 27 | 66978065 |
| 28 | 66978193 |
| 29 | 133956385 |
| 30 | 187142781 |
| 31 | 589907497 |
| 32 | 1018886425 |