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 | 235196 |
| 2 | 1699092 |
| 3 | 12297972 |
| 4 | 89105036 |
| 5 | 645979544 |
| 6 | 4684420552 |
| 7 | 33973205930 |
| 8 | 246394508200 |
| 9 | 1787038582186 |
| 10 | 12961135262872 |
| 11 | 94006175274074 |
| 12 | 681823782781788 |
| 13 | 4945255917923416 |
| 14 | 35867880222569408 |
| 15 | 260149395845852954 |