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A003438 as a simple table

n a(n)
0 1
1 120
2 6210
3 153040
4 2224955
5 22069251
6 164176640
7 976395820
8 4855258305
9 20856798285
10 79315936751
11 272095118010
12 854560160105
13 2486299719645
14 6765755480415
15 17356306529251
16 42250330784180
17 98137852369965 

[1,120,6210,153040,2224955,22069251,164176640,
 976395820,4855258305,20856798285,79315936751,
 272095118010,854560160105,2486299719645,
 6765755480415,17356306529251,42250330784180,
 98137852369965]

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Last modified June 8 04:51 EDT 2024. Contains 373207 sequences. (Running on oeis4.)