n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 7 |
5 | 28 |
6 | 56 |
7 | 88 |
8 | 594 |
9 | 5808 |
10 | 415272 |
11 | 8758464 |
12 | 274431872 |
13 | 12856077696 |
14 | 905435186304 |
15 | 481691519113728 |
16 | 77763074616922464 |
17 | 3824113551749834112 |
18 | 1437016892446437662976 |
19 | 165559472503434318118656 |
20 | 146602912901791088694069888 |
21 | 200050146291129782743679367168 |
[1,1,4,7,28,56,88,594,5808,415272,8758464, 274431872,12856077696,905435186304, 481691519113728,77763074616922464, 3824113551749834112,1437016892446437662976, 165559472503434318118656, 146602912901791088694069888, 200050146291129782743679367168] |