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A128242 as a simple table

n a(n)
3 0
4 0
5 1
6 1
7 5
8 16
9 66
10 266
11 1235
12 6350
13 37364
14 251106
15 1942085
16 17287710
17 177086792
18 2084120446
19 28125888087
20 434318629496
21 7657513894860 

[0,0,1,1,5,16,66,266,1235,6350,37364,251106,
 1942085,17287710,177086792,2084120446,28125888087,
 434318629496,7657513894860]

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Last modified April 25 16:45 EDT 2024. Contains 371989 sequences. (Running on oeis4.)