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A221815 as a simple table

n a(n)
1 1
2 91
3 1041
4 29412
5 574706
6 13076919
7 280280821
8 6157362467
9 133971367251
10 2926556131807
11 63829507756107
12 1393042238694910
13 30394642476262010
14 663246016374693512
15 14472196608372584944
16 315792262364985554100 

[1,91,1041,29412,574706,13076919,280280821,
 6157362467,133971367251,2926556131807,
 63829507756107,1393042238694910,30394642476262010,
 663246016374693512,14472196608372584944,
 315792262364985554100]

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Last modified June 9 00:10 EDT 2023. Contains 363165 sequences. (Running on oeis4.)