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A318399 as a simple table

n a(n)
1 1
2 6
3 84
4 2226
5 93246
6 5616492
7 459173406
8 48933260388
9 6595445513412
10 1098326915060730
11 221772386369110242
12 53460963703982862534
13 15185890964240671486740
14 5026315912246843181692776
15 1919721040169845172603949966
16 838872819016448052585038291124

[1,6,84,2226,93246,5616492,459173406,48933260388,
 6595445513412,1098326915060730,221772386369110242,
 53460963703982862534,15185890964240671486740,
 5026315912246843181692776,
 1919721040169845172603949966,
 838872819016448052585038291124]

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Last modified August 1 05:51 EDT 2021. Contains 346384 sequences. (Running on oeis4.)