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 | 28 |
| 2 | 785 |
| 3 | 22008 |
| 4 | 617009 |
| 5 | 17298260 |
| 6 | 484968289 |
| 7 | 13596410352 |
| 8 | 381184458145 |
| 9 | 10686761238412 |
| 10 | 299610499133681 |
| 11 | 8399780736981480 |
| 12 | 235493471134615121 |
| 13 | 6602216972506204868 |
| 14 | 185097568701308351425 |
| 15 | 5189334140609140044768 |