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A039765 as a simple table

n a(n)
0 0
1 0
2 4
3 31
4 240
5 1931
6 16396
7 147589
8 1408224
9 14214559
10 151394940
11 1696783221
12 19958826080
13 245788962199
14 3161635135340
15 42390110260685
16 591257152058944
17 8563898444592927
18 128598641049231996

[0,0,4,31,240,1931,16396,147589,1408224,14214559,
 151394940,1696783221,19958826080,245788962199,
 3161635135340,42390110260685,591257152058944,
 8563898444592927,128598641049231996]

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)