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) |
|---|---|
| 7 | 3186 |
| 8 | 10095 |
| 9 | 31315 |
| 10 | 95747 |
| 11 | 290203 |
| 12 | 876865 |
| 13 | 2653275 |
| 14 | 8041166 |
| 15 | 24330731 |
| 16 | 73575295 |
| 17 | 222485869 |
| 18 | 672942613 |
| 19 | 2036045587 |
| 20 | 6162245223 |
| 21 | 18657449688 |
| 22 | 56515205963 |
| 23 | 171276072757 |
| 24 | 519343908177 |
| 25 | 1575593664271 |
| 26 | 4782615540983 |
| 27 | 14525050415557 |
| 28 | 44136414706494 |
| 29 | 134183024831193 |