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 | 6 |
| 2 | 7 |
| 3 | 20 |
| 4 | 27 |
| 5 | 47 |
| 6 | 74 |
| 7 | 269 |
| 8 | 6799 |
| 9 | 7068 |
| 10 | 35071 |
| 11 | 112281 |
| 12 | 371914 |
| 13 | 2715679 |
| 14 | 141587222 |
| 15 | 144302901 |
| 16 | 430193024 |
| 17 | 1434881973 |
| 18 | 3299956970 |
| 19 | 50934236523 |
| 20 | 105168430016 |
| 21 | 261271096555 |
| 22 | 1150252816236 |
| 23 | 18665316156331 |
| 24 | 38480885128898 |
| 25 | 288031512058617 |
| 26 | 326512397187515 |