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A239040 as a simple table

n a(n)
1 3
2 7
3 16
4 38
5 90
6 212
7 500
8 1180
9 2784
10 6568
11 15496
12 36560
13 86256
14 203504
15 480128
16 1132768
17 2672544
18 6305344
19 14876224
20 35097536
21 82805760
22 195363968
23 460923008
24 1087457536
25 2565643008
26 6053132032
27 14281179136
28 33693644288
29 79493552640

[3,7,16,38,90,212,500,1180,2784,6568,15496,36560,
 86256,203504,480128,1132768,2672544,6305344,
 14876224,35097536,82805760,195363968,460923008,
 1087457536,2565643008,6053132032,14281179136,
 33693644288,79493552640]

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Last modified October 22 03:04 EDT 2019. Contains 328315 sequences. (Running on oeis4.)