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 | 40353607 |
| 1 | 198359290368 |
| 2 | 14507145975869 |
| 3 | 262144000000000 |
| 4 | 2334165173090451 |
| 5 | 13537086546263552 |
| 6 | 58871586708267913 |
| 7 | 208215748530929664 |
| 8 | 630249409724609375 |
| 9 | 1689478959002692096 |
| 10 | 4108400332687853397 |
| 11 | 9223372036854775808 |
| 12 | 19370159742424031659 |
| 13 | 38443359375000000000 |