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 | 7536790 |
| 2 | 25829770 |
| 3 | 91147915 |
| 4 | 325333429 |
| 5 | 1167362677 |
| 6 | 4198162231 |
| 7 | 15103463125 |
| 8 | 54284048195 |
| 9 | 194700970891 |
| 10 | 696196564935 |
| 11 | 2479358418705 |
| 12 | 8785103222513 |
| 13 | 30936275166758 |
| 14 | 109148631741555 |
| 15 | 386157614218688 |
| 16 | 1369098248146214 |