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 | 1 |
| 1 | 8 |
| 2 | 17 |
| 3 | 144 |
| 4 | 305 |
| 5 | 2584 |
| 6 | 5473 |
| 7 | 46368 |
| 8 | 98209 |
| 9 | 832040 |
| 10 | 1762289 |
| 11 | 14930352 |
| 12 | 31622993 |
| 13 | 267914296 |
| 14 | 567451585 |
| 15 | 4807526976 |
| 16 | 10182505537 |
| 17 | 86267571272 |
| 18 | 182717648081 |
| 19 | 1548008755920 |
| 20 | 3278735159921 |
| 21 | 27777890035288 |
| 22 | 58834515230497 |
| 23 | 498454011879264 |
| 24 | 1055742538989025 |
| 25 | 8944394323791464 |