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 | 23 |
| 2 | 997 |
| 3 | 44855 |
| 4 | 2023309 |
| 5 | 91286913 |
| 6 | 4118731453 |
| 7 | 185831471351 |
| 8 | 8384460804153 |
| 9 | 378295365602127 |
| 10 | 17068167803123941 |
| 11 | 770092310699262519 |
| 12 | 34745508355302417387 |
| 13 | 1567669659985973646979 |
| 14 | 70731103937531908893003 |
| 15 | 3191290354032154992708783 |
| 16 | 143986641757115568305530757 |