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 | 127 |
| 2 | 14324 |
| 3 | 557931 |
| 4 | 1831540 |
| 5 | 4517357 |
| 6 | 9734388 |
| 7 | 26079025 |
| 8 | 167982242 |
| 9 | 2096276793 |
| 10 | 10354981402 |
| 11 | 24379848623 |
| 12 | 47195272710 |
| 13 | 78109546591 |
| 14 | 169264277168 |
| 15 | 285424955019 |
| 16 | 468934979410 |
| 17 | 749602296677 |
| 18 | 1302535107108 |
| 19 | 2819580695167 |
| 20 | 4457920826414 |