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 | 26 |
| 2 | 676 |
| 3 | 14974 |
| 4 | 327518 |
| 5 | 7169168 |
| 6 | 156957792 |
| 7 | 3434478282 |
| 8 | 75148438711 |
| 9 | 1644205521524 |
| 10 | 35974053130024 |
| 11 | 787081975249822 |
| 12 | 17220673773304768 |
| 13 | 376773189954832060 |
| 14 | 8243464731968266960 |
| 15 | 180359713794644968034 |