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A226980
as a simple table
n
a(n)
1
0
2
0
3
1
4
6
5
26
6
264
7
1157
8
23460
9
153485
10
6748424
11
70521609
12
6791578258
[0,0,1,6,26,264,1157,23460,153485,6748424, 70521609,6791578258]
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Last modified April 19 04:35 EDT 2024. Contains 371782 sequences. (Running on oeis4.)
