n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 48 |
4 | 402 |
5 | 4375 |
6 | 54595 |
7 | 777189 |
8 | 12284188 |
9 | 215999025 |
10 | 4132338673 |
11 | 85640640877 |
12 | 1910121348674 |
13 | 45571124446445 |
14 | 1157169377895739 |
15 | 31150000798832647 |
16 | 885481496002286200 |
17 | 26498034473000080321 |
18 | 832407848080194500301 |
19 | 27378188500890922864153 |
[1,1,6,48,402,4375,54595,777189,12284188, 215999025,4132338673,85640640877,1910121348674, 45571124446445,1157169377895739,31150000798832647, 885481496002286200,26498034473000080321, 832407848080194500301,27378188500890922864153] |