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 | 7 |
| 1 | 59 |
| 2 | 583 |
| 3 | 5771 |
| 4 | 57127 |
| 5 | 565499 |
| 6 | 5597863 |
| 7 | 55413131 |
| 8 | 548533447 |
| 9 | 5429921339 |
| 10 | 53750679943 |
| 11 | 532076878091 |
| 12 | 5267018100967 |
| 13 | 52138104131579 |
| 14 | 516114023214823 |
| 15 | 5109002128016651 |
| 16 | 50573907256951687 |
| 17 | 500630070441500219 |
| 18 | 4955726797158050503 |
| 19 | 49056637901139004811 |