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A093062 as a simple table

n a(n)
1 -1
2 0
3 2
4 8
5 78
6 214
7 1556
8 4108
9 28518
10 513972
11 1345808
12 24156990
13 165578670
14 433491846
15 2971210580
16 53316283380
17 956722012572
18 2504730758802
19 44945570173074
20 308061521102198
21 806515532933562
22 14472334024479534
23 99194853094422264
24 1779979416004150202

[-1,0,2,8,78,214,1556,4108,28518,513972,1345808,
 24156990,165578670,433491846,2971210580,
 53316283380,956722012572,2504730758802,
 44945570173074,308061521102198,806515532933562,
 14472334024479534,99194853094422264,
 1779979416004150202]

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Last modified July 31 08:07 EDT 2024. Contains 374774 sequences. (Running on oeis4.)