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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 9 |
| 5 | 36 |
| 6 | 289 |
| 7 | 1156 |
| 8 | 9801 |
| 9 | 39204 |
| 10 | 332929 |
| 11 | 1331716 |
| 12 | 11309769 |
| 13 | 45239076 |
| 14 | 384199201 |
| 15 | 1536796804 |
| 16 | 13051463049 |
| 17 | 52205852196 |
| 18 | 443365544449 |
| 19 | 1773462177796 |
| 20 | 15061377048201 |
| 21 | 60245508192804 |
[0,1,4,9,36,289,1156,9801,39204,332929,1331716, 11309769,45239076,384199201,1536796804, 13051463049,52205852196,443365544449, 1773462177796,15061377048201,60245508192804] |