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A260622 as a simple table

n a(n)
1 1
2 1
3 3
4 12
5 72
6 744
7 10416
8 270816
9 9906624
10 614210688
11 55278961920
12 8354817757440
13 1955027355240960
14 766650012876633600
15 478623425047744204800
16 492420437498707277414400
17 786887859122934229308211200
18 2148247421904894243053912064000 

[1,1,3,12,72,744,10416,270816,9906624,614210688,
 55278961920,8354817757440,1955027355240960,
 766650012876633600,478623425047744204800,
 492420437498707277414400,
 786887859122934229308211200,
 2148247421904894243053912064000]

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Last modified June 1 06:28 EDT 2024. Contains 373013 sequences. (Running on oeis4.)