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A306042 as a simple table

n a(n)
0 1
1 1
2 3
3 8
4 50
5 94
6 2446
7 -9024
8 297216
9 -3183264
10 64191984
11 -1041792192
12 22098943632
13 -478805234064
14 11856288460272
15 -308662348027008
16 8575865689645440
17 -248582819381690880
18 7556655091130023680
19 -240521346554744194560
20 8049494171497089265920
21 -283469026458500121634560

[1,1,3,8,50,94,2446,-9024,297216,-3183264,
 64191984,-1041792192,22098943632,-478805234064,
 11856288460272,-308662348027008,8575865689645440,
 -248582819381690880,7556655091130023680,
 -240521346554744194560,8049494171497089265920,
 -283469026458500121634560]

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Last modified June 19 14:08 EDT 2021. Contains 345140 sequences. (Running on oeis4.)