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A177281 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 24
5 120
6 720
7 5040
8 40320
9 362880
10 3628800
11 32659200
12 267805440
13 2033498880
14 14563332000
15 100185340320
16 672903217200
17 4472291398032
18 29721557854116
19 199059839989844

[1,1,2,6,24,120,720,5040,40320,362880,3628800,
 32659200,267805440,2033498880,14563332000,
 100185340320,672903217200,4472291398032,
 29721557854116,199059839989844]

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Last modified January 22 02:06 EST 2020. Contains 331133 sequences. (Running on oeis4.)