n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 5 |
3 | 22 |
4 | 128 |
5 | 896 |
6 | 7220 |
7 | 65336 |
8 | 653720 |
9 | 7155104 |
10 | 84998768 |
11 | 1089232160 |
12 | 14981704736 |
13 | 220233312896 |
14 | 3447195190592 |
15 | 57261708795776 |
16 | 1006401042534272 |
17 | 18663532970127872 |
18 | 364283224523605760 |
19 | 7466218532765196800 |
[0,2,5,22,128,896,7220,65336,653720,7155104, 84998768,1089232160,14981704736,220233312896, 3447195190592,57261708795776,1006401042534272, 18663532970127872,364283224523605760, 7466218532765196800] |