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A121766 as a simple table

n a(n)
1 0
2 8
3 66
4 728
5 6388
6 55736
7 464832
8 3809816
9 30666700
10 243825424
11 1918644782
12 14973489000
13 116048634636
14 894170460880
15 6855266846678
16 52329098898360
17 397934595732692
18 3015942269911904
19 22789668539106112

[0,8,66,728,6388,55736,464832,3809816,30666700,
 243825424,1918644782,14973489000,116048634636,
 894170460880,6855266846678,52329098898360,
 397934595732692,3015942269911904,
 22789668539106112]

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Last modified September 19 20:55 EDT 2020. Contains 337182 sequences. (Running on oeis4.)