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 | 1 |
| 2 | 4 |
| 3 | 21 |
| 4 | 38 |
| 5 | 117 |
| 6 | 7135 |
| 7 | 7809 |
| 8 | 1614095 |
| 9 | 3624914 |
| 10 | 8425892 |
| 11 | 16789093 |
| 12 | 18206374 |
| 13 | 20026429 |
| 14 | 106066483 |
| 15 | 297533015 |
| 16 | 329807820 |
| 17 | 393798971 |
| 18 | 762907505 |
| 19 | 98220075842 |
| 20 | 124475838767 |
| 21 | 132042717951 |
| 22 | 252079930415 |
| 23 | 308550332741 |
| 24 | 1938650338119 |
| 25 | 10430003444835 |
| 26 | 12126839108751 |