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 | 1 |
| 2 | 454 |
| 3 | 9033 |
| 4 | 113252 |
| 5 | 2525244 |
| 6 | 56630842 |
| 7 | 1075678445 |
| 8 | 21111073411 |
| 9 | 431729675719 |
| 10 | 8661860619988 |
| 11 | 172481732429072 |
| 12 | 3459368740976069 |
| 13 | 69421866008508425 |
| 14 | 1390069610625497582 |
| 15 | 27843303573923481669 |
| 16 | 558020746500279361494 |