n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 25 |
5 | 126 |
6 | 759 |
7 | 5280 |
8 | 41922 |
9 | 374348 |
10 | 3718632 |
11 | 40687982 |
12 | 486272963 |
13 | 6302207628 |
14 | 88028389880 |
15 | 1318140365566 |
16 | 21062423444982 |
17 | 357696122160256 |
18 | 6433377303116791 |
19 | 122156160094379094 |
20 | 2441860821816085218 |
21 | 51257318297766697640 |
22 | 1127262952173081139014 |
23 | 25919345794724305427250 |
24 | 621907163139705123859022 |
25 | 15544308709055844154008420 |
26 | 404076225273612078440996928 |
27 | 10908274705160761799960317228 |
[1,1,2,6,25,126,759,5280,41922,374348,3718632, 40687982,486272963,6302207628,88028389880, 1318140365566,21062423444982,357696122160256, 6433377303116791,122156160094379094, 2441860821816085218,51257318297766697640, 1127262952173081139014,25919345794724305427250, 621907163139705123859022, 15544308709055844154008420, 404076225273612078440996928, 10908274705160761799960317228] |