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A169970 as a simple table

n a(n)
0 1
1 1
2 2
3 2
4 6
5 8
6 28
7 48
8 244
9 476
10 2544
11 5952
12 35600
13 94456
14 659632
15 1984176
16 15106128
17 51493696

[1,1,2,2,6,8,28,48,244,476,2544,5952,35600,94456,
 659632,1984176,15106128,51493696]

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Last modified December 20 20:33 EST 2014. Contains 252289 sequences.