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 | 287327040 |
| 2 | 294053760 |
| 3 | 1149308160 |
| 4 | 2585943360 |
| 5 | 4597232640 |
| 6 | 7183176000 |
| 7 | 10343773440 |
| 8 | 14079024960 |
| 9 | 18388930560 |
| 10 | 23273490240 |
| 11 | 28732704000 |
| 12 | 34766571840 |
| 13 | 41375093760 |
| 14 | 48558269760 |
| 15 | 64648584000 |
| 16 | 73555722240 |
| 17 | 83037514560 |
| 18 | 93093960960 |
| 19 | 103725061440 |