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A049389 as a simple table

n a(n)
0 1
1 9
2 90
3 990
4 11880
5 154440
6 2162160
7 32432400
8 518918400
9 8821612800
10 158789030400
11 3016991577600
12 60339831552000
13 1267136462592000
14 27877002177024000
15 641171050071552000
16 15388105201717248000
17 384702630042931200000
18 10002268381116211200000

[1,9,90,990,11880,154440,2162160,32432400,
 518918400,8821612800,158789030400,3016991577600,
 60339831552000,1267136462592000,27877002177024000,
 641171050071552000,15388105201717248000,
 384702630042931200000,10002268381116211200000]

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Last modified April 24 13:49 EDT 2024. Contains 371958 sequences. (Running on oeis4.)