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A081620 as a simple table

n a(n)
1 1
2 4
3 12
4 48
5 144
6 576
7 960
8 1260
9 3600
10 82944
11 46080
12 184320
13 2985984
14 129600
15 55440
16 6881280
17 14745600
18 58982400
19 106168320
20 907200
21 18662400
22 247669456896
23 1321205760
24 2494800
25 207360000
26 45158400
27 7761600
28 978447237120

[1,4,12,48,144,576,960,1260,3600,82944,46080,
 184320,2985984,129600,55440,6881280,14745600,
 58982400,106168320,907200,18662400,247669456896,
 1321205760,2494800,207360000,45158400,7761600,
 978447237120]

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Last modified March 29 06:44 EDT 2024. Contains 371265 sequences. (Running on oeis4.)