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 | 81 |
| 2 | 706 |
| 3 | 3107 |
| 4 | 17748 |
| 5 | 46309 |
| 6 | 129830 |
| 7 | 260151 |
| 8 | 539992 |
| 9 | 1247273 |
| 10 | 2170794 |
| 11 | 4044955 |
| 12 | 6870716 |
| 13 | 10289517 |
| 14 | 15169198 |
| 15 | 23059679 |
| 16 | 35177040 |
| 17 | 49022881 |
| 18 | 69174002 |
| 19 | 94585683 |
| 20 | 122983924 |
| 21 | 161934005 |
| 22 | 209392326 |
| 23 | 272134567 |
| 24 | 360663848 |
| 25 | 464724249 |
| 26 | 577275130 |