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A006936 formatted as a simple table:

n a(n)
0 0
1 1
2 0
3 2
4 12
5 74
6 538
7 4682
8 47280
9 545832
10 7087186
11 102247562
12 1622632020
13 28091567594
14 526858343698
15 10641342970366
16 230283190930560
17 5315654681981354
18 130370767028589528
19 3385534663256845322

[0,1,0,2,12,74,538,4682,47280,545832,7087186,
 102247562,1622632020,28091567594,526858343698,
 10641342970366,230283190930560,5315654681981354,
 130370767028589528,3385534663256845322]

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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