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A181063 as a simple table

n a(n)
1 1
2 2
3 6
4 12
5 3960
6 60
7 420
8 840
9 17907120
10 2520
11 411863760
12 27720
13 68502634200
14 447069823200
15 360360
16 720720
17 7600186994400
18 12252240
19 9524356075634400
20 81909462250455840
21 1149071006394511200
22 232792560
23 35621201198229847200
24 5354228880
25 91351145008363640400

[1,2,6,12,3960,60,420,840,17907120,2520,411863760,
 27720,68502634200,447069823200,360360,720720,
 7600186994400,12252240,9524356075634400,
 81909462250455840,1149071006394511200,232792560,
 35621201198229847200,5354228880,
 91351145008363640400]

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Last modified October 17 08:36 EDT 2019. Contains 328107 sequences. (Running on oeis4.)