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A275953 as a simple table

n a(n)
1 6
2 30
3 204
4 1446
5 11550
6 108204
7 1091526
8 11998830
9 146864484
10 1920044166
11 26872081230
12 407766664284
13 6548790510726
14 111305007240510
15 2018907373622004
16 38462931870864486
17 769155464685741870
18 16240360254478668204
19 358012008058965575046
20 8233510983226617823230
21 198405453050668260272364
22 4967948949777295176374646
23 129158062469199137001844830 

[6,30,204,1446,11550,108204,1091526,11998830,
 146864484,1920044166,26872081230,407766664284,
 6548790510726,111305007240510,2018907373622004,
 38462931870864486,769155464685741870,
 16240360254478668204,358012008058965575046,
 8233510983226617823230,198405453050668260272364,
 4967948949777295176374646,
 129158062469199137001844830]

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Last modified August 18 13:06 EDT 2024. Contains 375269 sequences. (Running on oeis4.)