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A005096 as a simple table

n a(n)
0 1
1 0
2 0
3 3
4 20
5 115
6 714
7 5033
8 40312
9 362871
10 3628790
11 39916789
12 479001588
13 6227020787
14 87178291186
15 1307674367985
16 20922789887984
17 355687428095983
18 6402373705727982
19 121645100408831981
20 2432902008176639980
21 51090942171709439979
22 1124000727777607679978

[1,0,0,3,20,115,714,5033,40312,362871,3628790,
 39916789,479001588,6227020787,87178291186,
 1307674367985,20922789887984,355687428095983,
 6402373705727982,121645100408831981,
 2432902008176639980,51090942171709439979,
 1124000727777607679978]

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Last modified April 23 16:40 EDT 2024. Contains 371916 sequences. (Running on oeis4.)