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 | 0 |
| 2 | 2 |
| 3 | 3 |
| 4 | 26 |
| 5 | 27 |
| 6 | 29 |
| 7 | 30 |
| 8 | 80 |
| 9 | 81 |
| 10 | 83 |
| 11 | 84 |
| 12 | 107 |
| 13 | 108 |
| 14 | 110 |
| 15 | 111 |
| 16 | 7625597484986 |
| 17 | 7625597484987 |
| 18 | 7625597484989 |
| 19 | 7625597484990 |
| 20 | 7625597485013 |
| 21 | 7625597485014 |
| 22 | 7625597485016 |
| 23 | 7625597485017 |
| 24 | 7625597485067 |
| 25 | 7625597485068 |
| 26 | 7625597485070 |
| 27 | 7625597485071 |
| 28 | 7625597485094 |