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 | 18 |
| 2 | 38 |
| 3 | 456 |
| 4 | 854 |
| 5 | 9192 |
| 6 | 17132 |
| 7 | 183474 |
| 8 | 341876 |
| 9 | 3660378 |
| 10 | 6820478 |
| 11 | 73024176 |
| 12 | 136067774 |
| 13 | 1456823232 |
| 14 | 2714535092 |
| 15 | 29063440554 |
| 16 | 54154634156 |
| 17 | 579811987938 |
| 18 | 1080378148118 |
| 19 | 11567176318296 |
| 20 | 21553408328294 |