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 | 16 |
| 2 | 147 |
| 3 | 1881 |
| 4 | 22971 |
| 5 | 283131 |
| 6 | 3484893 |
| 7 | 42904365 |
| 8 | 528197043 |
| 9 | 6502696923 |
| 10 | 80055386493 |
| 11 | 985570487037 |
| 12 | 12133464037491 |
| 13 | 149376378762507 |
| 14 | 1838988638568957 |
| 15 | 22639986598509837 |
| 16 | 278723306070050355 |