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 | 30517578125 |
| 2 | 61035156250 |
| 3 | 91552734375 |
| 4 | 122070312500 |
| 5 | 183105468750 |
| 6 | 213623046875 |
| 7 | 244140625000 |
| 8 | 274658203125 |
| 9 | 335693359375 |
| 10 | 366210937500 |
| 11 | 427246093750 |
| 12 | 488281250000 |
| 13 | 549316406250 |
| 14 | 579833984375 |
| 15 | 640869140625 |
| 16 | 671386718750 |
| 17 | 701904296875 |
| 18 | 732421875000 |