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A321385 as a simple table

n a(n)
1 1
2 3
3 28
4 251
5 3126
6 46632
7 823544
8 16776955
9 387420517
10 9999996878
11 285311670612
12 8916100401824
13 302875106592254
14 11112006824734476
15 437893890380862528
16 18446744073692774139
17 827240261886336764178
18 39346408075296150201567
19 1978419655660313589123980
20 104857599999999989999997126

[1,3,28,251,3126,46632,823544,16776955,387420517,
 9999996878,285311670612,8916100401824,
 302875106592254,11112006824734476,
 437893890380862528,18446744073692774139,
 827240261886336764178,39346408075296150201567,
 1978419655660313589123980,
 104857599999999989999997126]

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Last modified May 24 23:50 EDT 2024. Contains 372782 sequences. (Running on oeis4.)