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A234313 as a simple table

n a(n)
0 1
1 1
2 4
3 34
4 376
5 5896
6 107104
7 2445664
8 61835776
9 1853785216
10 60075541504
11 2229983878144
12 88157067006976
13 3901637972801536
14 182049480718741504
15 9356335870657921024
16 503257631887961522176
17 29455739077723718189056
18 1794347026494847887867904
19 117825990265521485020463104

[1,1,4,34,376,5896,107104,2445664,61835776,
 1853785216,60075541504,2229983878144,
 88157067006976,3901637972801536,
 182049480718741504,9356335870657921024,
 503257631887961522176,29455739077723718189056,
 1794347026494847887867904,
 117825990265521485020463104]

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Last modified January 20 14:26 EST 2020. Contains 331094 sequences. (Running on oeis4.)