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 | 1 |
| 1 | 32 |
| 2 | 584 |
| 3 | 8288 |
| 4 | 101240 |
| 5 | 1121120 |
| 6 | 11570360 |
| 7 | 113293088 |
| 8 | 1064631032 |
| 9 | 9681082144 |
| 10 | 85688330696 |
| 11 | 741562925664 |
| 12 | 6296196525768 |
| 13 | 52589092312288 |
| 14 | 433044168426616 |
| 15 | 3521747918221984 |
| 16 | 28326976016327032 |
| 17 | 225625290109912096 |
| 18 | 1781402824552864712 |
| 19 | 13954143265951219296 |
| 20 | 108525895871787179576 |