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A117782 as a simple table

n a(n)
1 3
2 1
3 6
4 0
5 21
6 0
7 95
8 0
9 445
10 0
11 2181
12 0
13 11496
14 0
15 59723
16 0
17 315949
18 0
19 1718494
20 0
21 9403664
22 0

[3,1,6,0,21,0,95,0,445,0,2181,0,11496,0,59723,0,
 315949,0,1718494,0,9403664,0]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)