n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 5 |
6 | 18 |
7 | 92 |
8 | 628 |
9 | 5338 |
10 | 53927 |
11 | 627608 |
12 | 8245257 |
13 | 120542045 |
14 | 1939926385 |
15 | 34071346198 |
16 | 648413562908 |
17 | 13291025909948 |
18 | 291921277586304 |
19 | 6839533725684092 |
20 | 170267930301293824 |
21 | 4488220562839214752 |
22 | 124883326887085347926 |
23 | 3657771136861125837350 |
[1,1,1,2,5,18,92,628,5338,53927,627608,8245257, 120542045,1939926385,34071346198,648413562908, 13291025909948,291921277586304,6839533725684092, 170267930301293824,4488220562839214752, 124883326887085347926,3657771136861125837350] |