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 | 12539670481 |
| 2 | 13069482857 |
| 3 | 15076432489 |
| 4 | 15342679801 |
| 5 | 16974853201 |
| 6 | 17392546081 |
| 7 | 18260734519 |
| 8 | 18394765201 |
| 9 | 21654091837 |
| 10 | 23759084161 |
| 11 | 24785139601 |
| 12 | 25089467413 |
| 13 | 26714530189 |
| 14 | 27631845901 |
| 15 | 29384567041 |
| 16 | 29673748105 |
| 17 | 32798165401 |
| 18 | 35901682741 |
| 19 | 37946180251 |
| 20 | 38204791561 |