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 | 139952671 |
| 2 | 74689102411 |
| 3 | 121254376891 |
| 4 | 187054437571 |
| 5 | 231440115271 |
| 6 | 236359158267 |
| 7 | 303008129971 |
| 8 | 306252926071 |
| 9 | 380574791611 |
| 10 | 426951670531 |
| 11 | 556303918171 |
| 12 | 639109148371 |
| 13 | 660950414671 |
| 14 | 1101375141511 |
| 15 | 1483826843731 |
| 16 | 1487491483171 |
| 17 | 1861175569891 |
| 18 | 2794268624071 |