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A222559 as a simple table

n a(n)
0 0
1 0
2 2
3 6
4 10
5 50
6 56
7 392
8 400
9 3600
10 3610
11 39710
12 39722
13 516386
14 516400
15 7746000
16 7746016
17 131682272
18 131682290
19 2501963510
20 2501963530
21 52541234130
22 52541234152
23 1208448385496
24 1208448385520
25 30211209638000
26 30211209638026
27 815702660226702
28 815702660226730

[0,0,2,6,10,50,56,392,400,3600,3610,39710,39722,
 516386,516400,7746000,7746016,131682272,131682290,
 2501963510,2501963530,52541234130,52541234152,
 1208448385496,1208448385520,30211209638000,
 30211209638026,815702660226702,815702660226730]

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Last modified March 28 17:25 EDT 2024. Contains 371254 sequences. (Running on oeis4.)