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A009608 as a simple table

n a(n)
0 0
1 1
2 2
3 6
4 24
5 152
6 1072
7 8512
8 71680
9 662080
10 6603392
11 71748864
12 837838848
13 10499561984
14 139880866816
15 1976422924288
16 29453086916608
17 462014697656320
18 7601785735454720
19 130960983301496832

[0,1,2,6,24,152,1072,8512,71680,662080,6603392,
 71748864,837838848,10499561984,139880866816,
 1976422924288,29453086916608,462014697656320,
 7601785735454720,130960983301496832]

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Last modified June 19 13:40 EDT 2024. Contains 373503 sequences. (Running on oeis4.)