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 | 4782969 |
| 1 | 1280000000 |
| 2 | 27512614111 |
| 3 | 230539333248 |
| 4 | 1174711139837 |
| 5 | 4398046511104 |
| 6 | 13348388671875 |
| 7 | 34792782221696 |
| 8 | 80798284478113 |
| 9 | 171382426877952 |
| 10 | 337931541778439 |
| 11 | 627485170000000 |
| 12 | 1107984764452581 |
| 13 | 1874584905187328 |
| 14 | 3057125241215467 |
| 15 | 4828861374436224 |