n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 26 |
3 | 288 |
4 | 5012 |
5 | 122608 |
6 | 3869456 |
7 | 148838816 |
8 | 6721823600 |
9 | 347434618432 |
10 | 20180665251360 |
11 | 1299399587904384 |
12 | 91769604540962816 |
13 | 7049102617933604352 |
14 | 584848346900868001792 |
15 | 52109481481410100183552 |
16 | 4961586770799906448318208 |
17 | 502707358017324652042259456 |
18 | 54000226687663791374322245120 |
19 | 6129804668943947684749062516736 |
20 | 733179029209444818691965317379072 |
[1,4,26,288,5012,122608,3869456,148838816, 6721823600,347434618432,20180665251360, 1299399587904384,91769604540962816, 7049102617933604352,584848346900868001792, 52109481481410100183552,4961586770799906448318208, 502707358017324652042259456, 54000226687663791374322245120, 6129804668943947684749062516736, 733179029209444818691965317379072] |