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A076509 as a simple table

n a(n)
1 3
2 3
3 12
4 54
5 72
6 288
7 1296
8 1728
9 6912
10 31104
11 41472
12 165888
13 746496
14 995328
15 3981312
16 17915904
17 23887872
18 95551488
19 429981696
20 573308928
21 2293235712
22 10319560704
23 13759414272
24 55037657088
25 247669456896
26 330225942528

[3,3,12,54,72,288,1296,1728,6912,31104,41472,
 165888,746496,995328,3981312,17915904,23887872,
 95551488,429981696,573308928,2293235712,
 10319560704,13759414272,55037657088,247669456896,
 330225942528]

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Last modified October 26 05:32 EDT 2021. Contains 348256 sequences. (Running on oeis4.)