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A216081 as a simple table

n a(n)
1 1
2 12
3 136
4 12840
5 373780
6 99827160
7 5116799368
8 2751754706832
9 212339816996032
10 194478305002268064
11 20707051422399128416
12 29191372156840204219200
13 4055642578974004982217280
14 8220961603626446873042001408

[1,12,136,12840,373780,99827160,5116799368,
 2751754706832,212339816996032,194478305002268064,
 20707051422399128416,29191372156840204219200,
 4055642578974004982217280,
 8220961603626446873042001408]

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Last modified May 15 23:51 EDT 2022. Contains 353687 sequences. (Running on oeis4.)