n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 26 |
4 | 257 |
5 | 3586 |
6 | 66207 |
7 | 1540693 |
8 | 43659615 |
9 | 1469677309 |
10 | 57681784820 |
11 | 2601121752854 |
12 | 133170904684965 |
13 | 7664254746784243 |
14 | 491679121677763607 |
15 | 34905596059311761907 |
16 | 2725010800987216480527 |
17 | 232643959843709167832482 |
18 | 21613761720729431904201734 |
[1,1,4,26,257,3586,66207,1540693,43659615, 1469677309,57681784820,2601121752854, 133170904684965,7664254746784243, 491679121677763607,34905596059311761907, 2725010800987216480527,232643959843709167832482, 21613761720729431904201734] |