n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 24 |
4 | 116 |
5 | 648 |
6 | 4088 |
7 | 28640 |
8 | 219920 |
9 | 1832224 |
10 | 16430176 |
11 | 157554048 |
12 | 1606879040 |
13 | 17350255744 |
14 | 197553645440 |
15 | 2363935624704 |
16 | 29638547505408 |
17 | 388328781668864 |
18 | 5304452565517824 |
19 | 75381218537805824 |
20 | 1112348880749130752 |
21 | 17014743624340539392 |
22 | 269360902955086379008 |
[1,2,6,24,116,648,4088,28640,219920,1832224, 16430176,157554048,1606879040,17350255744, 197553645440,2363935624704,29638547505408, 388328781668864,5304452565517824, 75381218537805824,1112348880749130752, 17014743624340539392,269360902955086379008] |