A207176 - OEIS

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A207176 as a simple table

n	a(n)
1	2
2	16
3	241
4	11227
5	1507355
6	567046841
7	600838995529
8	1782395103048207
9	14875073639322545780
10	349568074576274459361253
11	23097327995486146831078764702
12	4291548218733300058236161251915163

[2,16,241,11227,1507355,567046841,600838995529, 1782395103048207,14875073639322545780, 349568074576274459361253, 23097327995486146831078764702, 4291548218733300058236161251915163]