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A045905 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 1
5 2
6 16
7 80
8 473
9 2517
10 13431
11 69357
12 353943
13 1780894
14 8886254
15 44024308
16 217021967
17 1065653519
18 5217704239
19 25491204743
20 124335254416
21 605720277647
22 2948274685881
23 14341442951945
24 69732440151924

[0,0,0,0,1,2,16,80,473,2517,13431,69357,353943,
 1780894,8886254,44024308,217021967,1065653519,
 5217704239,25491204743,124335254416,605720277647,
 2948274685881,14341442951945,69732440151924]

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Last modified April 18 13:50 EDT 2024. Contains 371780 sequences. (Running on oeis4.)