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 | 7 |
| 1 | 15 |
| 2 | 22 |
| 3 | 147 |
| 4 | 169 |
| 5 | 485 |
| 6 | 6959 |
| 7 | 14403 |
| 8 | 21362 |
| 9 | 142575 |
| 10 | 163937 |
| 11 | 470449 |
| 12 | 6750223 |
| 13 | 13970895 |
| 14 | 20721118 |
| 15 | 138297603 |
| 16 | 159018721 |
| 17 | 456335045 |
| 18 | 6547709351 |
| 19 | 13551753747 |
| 20 | 20099463098 |
| 21 | 134148532335 |
| 22 | 154247995433 |