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A277421 as a simple table

n a(n)
0 1
1 8
2 254
3 13614
4 1025048
5 99368620
6 11781698256
7 1651548277946
8 267197019684224
9 49000715036948304
10 10044513851042988800
11 2275926588768085912582
12 564838094735322988575744
13 152378369304839730672573044
14 44397985962782115253758973952

[1,8,254,13614,1025048,99368620,11781698256,
 1651548277946,267197019684224,49000715036948304,
 10044513851042988800,2275926588768085912582,
 564838094735322988575744,
 152378369304839730672573044,
 44397985962782115253758973952]

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Last modified June 13 10:36 EDT 2021. Contains 344988 sequences. (Running on oeis4.)