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 | 0 |
| 2 | 4 |
| 3 | 78 |
| 4 | 528 |
| 5 | 2200 |
| 6 | 6900 |
| 7 | 17934 |
| 8 | 40768 |
| 9 | 83808 |
| 10 | 159300 |
| 11 | 284350 |
| 12 | 482064 |
| 13 | 782808 |
| 14 | 1225588 |
| 15 | 1859550 |
| 16 | 2745600 |
| 17 | 3958144 |
| 18 | 5586948 |
| 19 | 7739118 |
| 20 | 10541200 |
| 21 | 14141400 |
| 22 | 18711924 |
| 23 | 24451438 |
| 24 | 31587648 |
| 25 | 40380000 |
| 26 | 51122500 |
| 27 | 64146654 |
| 28 | 79824528 |
| 29 | 98571928 |
| 30 | 120851700 |
| 31 | 147177150 |
| 32 | 178115584 |