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A054247 as a simple table

n a(n)
0 1
1 2
2 6
3 102
4 8548
5 4211744
6 8590557312
7 70368882591744
8 2305843028004192256
9 302231454921524358152192
10 158456325028538104598816096256
11 332306998946229005407670289177772032
12 2787593149816327892769293535238052808491008

[1,2,6,102,8548,4211744,8590557312,70368882591744,
 2305843028004192256,302231454921524358152192,
 158456325028538104598816096256,
 332306998946229005407670289177772032,
 2787593149816327892769293535238052808491008]

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Last modified August 8 02:45 EDT 2020. Contains 336290 sequences. (Running on oeis4.)