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 | 164 |
| 2 | 628 |
| 3 | 2444 |
| 4 | 10040 |
| 5 | 34424 |
| 6 | 142400 |
| 7 | 612536 |
| 8 | 2536016 |
| 9 | 8772720 |
| 10 | 36320296 |
| 11 | 156298040 |
| 12 | 648930320 |
| 13 | 2246427920 |
| 14 | 9290072680 |
| 15 | 40123676576 |
| 16 | 166398412640 |
| 17 | 574717970240 |
| 18 | 2376856817864 |
| 19 | 10244120543704 |
| 20 | 42544644116352 |
| 21 | 146496800436256 |
| 22 | 607708669110320 |
| 23 | 2625008220416552 |
| 24 | 10882360875506928 |
| 25 | 37586414897168848 |
| 26 | 156056124134144296 |