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A128688
as a simple table
n
a(n)
1
1
2
8
3
24
4
86
5
90
6
780
7
5940
8
52350
9
278460
10
40768260
11
6847205430
12
5027286840810
[1,8,24,86,90,780,5940,52350,278460,40768260, 6847205430,5027286840810]
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Last modified April 23 16:40 EDT 2024. Contains 371916 sequences. (Running on oeis4.)