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 | 28 |
| 2 | 784 |
| 3 | 15340 |
| 4 | 245055 |
| 5 | 3516324 |
| 6 | 47735665 |
| 7 | 630339756 |
| 8 | 8213689391 |
| 9 | 106375878027 |
| 10 | 1373916879120 |
| 11 | 17723771318006 |
| 12 | 228519337975633 |
| 13 | 2945698436819118 |
| 14 | 37967141667302902 |
| 15 | 489335430219899681 |
| 16 | 6306607945054850639 |